Table of Contents

Locator Record

Title: Audiometry (AUX_C )
Contact Number: 1-866-441-NCHS
Years of Content: 2003 - 2004
First Published: February, 2006
Revised: December, 2007
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Audiometric hearing testing
Record Source: NHANES 2003 - 2004
Survey Methodology: NHANES 2003 - 2004 is a stratified multistage probability sample of the civilian non-institutionalized population of the U.S.
Medium: NHANES Web site; SAS transport files

Component Description

The NHANES 2003–2004 Audiometry Examination Component consists of four parts:

1) A pre-exam audiometric questionnaire: This is a series of questions to identify conditions that would affect how audiometric testing is conducted, or how results are interpreted. Questions include whether the subject has ear tubes, a current cold or ear problem, or recent loud noise exposure. Note that more extensive data relating to study subject’s hearing status are contained in the audiometry questionnaire (AUQ) section of the NHANES Sample Person Interview Questionnaire. Questionnaire information regarding occupational noise exposure can be found in the Occupational (OCQ) section of the NHANES Sample Person Interview Questionnaire.

2) A brief otoscopic screening (physical) exam of the ear canals and eardrums: This was performed to identify abnormalities which would require alternate audiometric procedures or influence interpretation of test results, and to identify conditions which might require medical referral. The exam screened for excessive or impacted ear cerumen (wax), physical abnormalities, or collapsing external ear canals.

3) Tympanometry: This is an objective assessment of middle ear function by testing the mobility of the eardrum in response to changes in air pressure within the ear canal. It was used to identify middle ear pathologies that might contribute to hearing loss. Tympanometric data, included in this primary Audiometry data file consists of quantitative measurement data for middle ear volume, pressure, compliance, and gradient.

4) Pure tone air conduction audiometry: This measures hearing sensitivity by presenting pure tone signals to the ear through earphones and by varying the intensity of the signals until a subject’s hearing threshold at that frequency is determined. Testing was performed at frequencies across the range of human hearing.

Eligible Sample

The Audiometry Component tested a ½ sample of U.S. adults ages 20–69 years. Subjects using hearing aids who were not able to remove them for testing and subjects who had sufficient ear pain at the time of the exam that they could not tolerate headphones were excluded from the Audiometry Component. There were no other precluding conditions for any part of the audiologic exam.

Protocol and Procedure

All Audiometry Component sections were performed by a trained examiner on examinees aged 20–69 in a dedicated, sound-isolating room in the mobile examination center (MEC). Hearing threshold testing was conducted on both ears of examinees at seven frequencies (500, 1000, 2000, 3000, 4000, 6000, and 8000 Hz). Testing was conducted according to a modified Hughson Westlake procedure using the automated testing mode of the audiometer, except as indicated below. The effective range for automated audiometric testing was from –10 to 100 decibels (dB) at 500 to 6000 Hz and –10 to 90 dB at 8000 Hz. Thresholds could be tested through 120 dB (110 dB at 8000 Hz) using manual audiometric mode. Observed values, therefore, varied between –10 and 120 dB. If an examinee did not respond to the signal tone at any level for one or more frequencies because of deafness or severe hearing loss, a threshold level of 666 was entered. Manual testing was also conducted when the examinee could not operate the response switch or responded too slowly for the audiometer to accurately record the response.

In some instances, if a pure tone audiometric signal is sufficiently loud, it can “cross over” and be heard by the opposite ear via bone conduction. When this occurs, it is difficult to determine if the threshold obtained is truly the threshold of the test ear, or an artifact of the non-test ear (which may have better hearing). For the current study, a crossover retesting protocol was performed whenever the observed threshold at any given frequency was poorer in one ear than the other by 25 dB at 500 and 1000 Hz; or 40 dB at any higher frequency. Retesting was accomplished using insert earphones, which are smaller and have less direct contact with the head. Thus, a much louder stimulus is required before crossover occurs. Due to the complexity of the procedure, masking was not employed in this survey.

Quality Assurance & Quality Control

Instrumentation for the Audiometry Component included an Interacoustics Model AD226 audiometer with standard TDH-39 headphones and Etymotic EarTone 3A insert earphones. Tympanometry was performed using a Micro Audiometrics Earscan Acoustic Impedance Tympanometer. All testing was performed within a sound-isolating booth, located in a dedicated room in the MEC. Audiometric calibration and background noise levels were checked using a Quest Model 1800 Precision Integrating Sound Level Meter and Model OB-300 1/3-1/1 octave filter set. Daily monitoring of calibration and ambient noise levels was accomplished with a Quest Model BA-201-25 Bioacoustic Simulator and Octave Band Monitor. All data from each of the four sections of the Audiometry Component were entered directly into the computerized NHANES survey database system. Data from the Interacoustics Model AD226 audiometer and Micro Audiometrics Earscan Acoustic Impedance tympanometer were captured electronically and uploaded into the survey information system automatically.

The audiometers used in this survey met the specifications of ANSI S3.6-1996 for Type 3 audiometers. An acoustic calibration check to measure the output and linearity of the audiometer (through both standard and insert earphones) was conducted before the examinations began at each MEC site using a Quest Model 1800 sound level meter kit; a complete acoustic calibration check was also conducted at the end of each stand. Throughout the stand, output of the audiometer was monitored daily using a Quest Model BA-201-25 bioacoustic simulator, and a daily listening check (tone quality, attenuator accuracy, headphone cords, crossover, etc.) was also performed. Standard and insert earphones were checked on an alternating basis. If a unit did not meet specifications, it was sent for servicing, and a fully calibrated backup unit was used for examinations. Manufacturer’s calibration (traceable to the National Institute of Standards and Technology [NIST]) was performed annually on each audiometer.

An environmental noise survey was also conducted at the beginning of each stand using the Quest 1800 sound level meter. The survey was repeated weekly throughout the stand. The audiometric test room was required to meet or exceed the specifications of ANSI S3.1-1991 for ears covered testing. A Quest Model BA-201-25 Bioacoustic Simulator and Octave Band Monitor was used to continuously measure the background noise levels in the audiometric test room during audiometric examinations. Pure tone audiometric testing was not performed if ambient noise levels in the test booth exceeded maximum permissible levels. A comprehensive calibration (traceable to NIST) of the sound level meter and bioacoustic simulator were performed annually by the manufacturer. The physical volume calibration of the Micro Audiometric Earscan tympanometer was checked at the start and end of each stand and daily throughout the stand. Air pressure was calibrated automatically by the unit each time it was turned on. The tympanometer also received an exhaustive NIST-traceable calibration check annually.

As an additional quality measure, all audiograms, whether conducted in automated or manual mode, tested the 1000 Hz frequency twice in each ear as a measure of the reliability of the subject’s responses. Pure tone audiograms were not accepted if there was more than a 10 dB difference between them. For further details regarding any of these procedures, analysts should consult the NHANES Audiometry/Tympanometry Procedures Manual (National Center for Health Statistics, 2003).

The MEC Health Technicians who performed the Audiometry Examination Component of NHANES were professionally trained by a certified audiologist from the National Institute for Occupational Safety & Health (NIOSH). NIOSH also conducted health technician performance monitoring of each technician on a regular basis. Field visits to each MEC were conducted by the NIOSH Audiologist at least three times per year. Additionally, NCHS Project Officers visited the MECs approximately twice per year to observe the audiometry examinations and verify that standard testing procedures were being followed. NIOSH consultants provided the MEC health technicians with annual retraining and protocol updates.

The quantitative tympanometric measurements reported in this data file represent the single best of two curves obtained during testing. Subjective quality ratings for these tympanograms are the variables AUAREQC and AUALEQC. These represent a qualitative assessment of tympanogram quality by the consulting Audiologist. Please note, however, that this rating process scored tympanograms on the basis of quality, not normality. Abnormal tympanograms were classified as “good” if they were consistent with a subject’s audiometric data, including otoscopy, numeric tympanometry readings, and audiogram.

Data Processing and Editing

All data were captured into the NHANES computerized database system, with audiometric and tympanometric data automatically uploaded. On a continuous basis, a consulting Audiologist performed a clinical review of all data for each subject as it was received, checking for quality and consistency. In addition, a computerized data editing program was developed to check for logical inconsistencies in the data and technician errors, and to cross-check other issues affecting data quality (consistency in identifying potential instances where crossover effects might have occurred, assurance of randomization of the initial test ear, etc.). Back-end edits of the data were performed as needed when errors were detected.

Analytic Notes

This examination was administered to a ½ sample of participants in the MEC. Therefore, the Audiometry sub-sample weights provided with the Audiometry data file should be used for data analysis. For more information on the use of sample weights in current NHANES data analysis and for combining weighted data across multiple NHANES survey years, please refer to the current NHANES Analytic and Reporting Guidelines.

Audiologic data analysis is a complex procedure and requires a thorough knowledge of the specialty content area for valid results to be obtained. If an analyst does not have professional experience in this area, it is recommended that audiologic consultation be obtained to help formulate and review the results of the analysis. Data analysts should be especially aware of the fact that the number “666” in all primary audiometric frequency data fields (AUXU1K1R through AUXU8KL) as well as in all repeat test frequencies (AUXR1K1R through AUXR8KL) is a qualitative code for non-response at a particular frequency, and does not represent actual measured decibel hearing threshold values. They should be appropriately edited prior to any numerical data analysis.

References

Codebook and Frequencies

SEQN - Respondent sequence number

Variable Name:
SEQN
SAS Label:
Respondent sequence number
English Text:
Respondent sequence number.
Target:
Both males and females 20 YEARS - 69 YEARS

WTSAU2YR - Audiometry Subsample 2 year MEC Weight

Variable Name:
WTSAU2YR
SAS Label:
Audiometry Subsample 2 year MEC Weight
English Text:
Audiometry Subsample 2 year MEC Weight
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 323087.55894 Range of Values 1889 1889
. Missing 0 1889

AUAEXSTS - Status of an Audio Exam

Variable Name:
AUAEXSTS
SAS Label:
Status of an Audio Exam
English Text:
Status of an Audiometry Exam
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Complete 1732 1732
2 Partial 53 1785
3 Not done 104 1889
. Missing 0 1889

AUAEXCMT - Comment code for an Audio Exam

Variable Name:
AUAEXCMT
SAS Label:
Comment code for an Audio Exam
English Text:
Comment code for an Audio Exam
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 SP refusal 44 44
3 No time 2 46
4 Physical limitation 19 65
5 Communication problem 8 73
6 Equipment failure 2 75
7 Sp ill/emergency 5 80
72 Error (technician/software/supply) 10 90
84 SP with child 5 95
99 Other, specify 62 157
. Missing 1732 1889

AUQ010 - Have Ear Tube, Right or Left Ear?

Variable Name:
AUQ010
SAS Label:
Have Ear Tube, Right or Left Ear?
English Text:
Do you now have a tube in your right or left ear? (If yes, indicate affected ear(s))
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes, right ear 2 2
2 Yes, left ear 0 2
3 Yes, both ears 3 5
4 No 1777 1782
7 Refused 1 1783
9 Don't know 2 1785
. Missing 104 1889

AUQ020 - Had Cold, Sinus or Earache Last 24 Hrs?

Variable Name:
AUQ020
SAS Label:
Had Cold, Sinus or Earache Last 24 Hrs?
English Text:
Have you had a cold, sinus problem, or earache in the last 24 hours?
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 283 283
2 No 1499 1782
7 Refused 0 1782
9 Don't know 3 1785
. Missing 104 1889

AUQ020A - Had Cold Last 24 Hrs?

Variable Name:
AUQ020A
SAS Label:
Had Cold Last 24 Hrs?
English Text:
Have you had a cold in the last 24 hours?
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 97 97
2 No (checkbox unchecked) 183 280
9 Don't know 3 283
. Missing 1606 1889

AUQ020B - Had Sinus Problem Last 24 Hours?

Variable Name:
AUQ020B
SAS Label:
Had Sinus Problem Last 24 Hours?
English Text:
Have you had a sinus problem in the last 24 hours
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 166 166
2 No (checkbox unchecked) 114 280
9 Don't know 3 283
. Missing 1606 1889

AUQ020C - Earache Last 24 Hours, Right?

Variable Name:
AUQ020C
SAS Label:
Earache Last 24 Hours, Right?
English Text:
Have you had an earache in the right ear in the last 24 hours?
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 15 15
2 No (checkbox unchecked) 265 280
9 Don't know 3 283
. Missing 1606 1889

AUQ020D - Earache Last 24 Hours, Left?

Variable Name:
AUQ020D
SAS Label:
Earache Last 24 Hours, Left?
English Text:
Have you had an earache in left ear in the last 24 hours?
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 13 13
2 No (checkbox unchecked) 267 280
9 Don't know 3 283
. Missing 1606 1889

AUQ020E - Earache Last 24 Hours, Both?

Variable Name:
AUQ020E
SAS Label:
Earache Last 24 Hours, Both?
English Text:
Have you had an earache in both ears in the last 24 hours?
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 11 11
2 No (checkbox unchecked) 269 280
9 Don't know 3 283
. Missing 1606 1889

AUQ030 - Exposed Loud Noise/Music Last 24 Hrs?

Variable Name:
AUQ030
SAS Label:
Exposed Loud Noise/Music Last 24 Hrs?
English Text:
Have you been exposed to loud noise or listened to music with headphones in the past 24 hours?
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 146 146
2 No 1638 1784
7 Refused 1 1785
9 Don't know 0 1785
. Missing 104 1889

AUQ040 - Hours Since Noise/Music Ended?

Variable Name:
AUQ040
SAS Label:
Hours Since Noise/Music Ended?
English Text:
How many hours ago did the noise or music end?
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
1 to 24
Code or Value Value Description Count Cumulative Skip to Item
1 to 24 Range of Values 146 146
77 SP refused 0 146
99 Don't know 0 146
. Missing 1743 1889

AUQ050 - Self Reported Better Ear

Variable Name:
AUQ050
SAS Label:
Self Reported Better Ear
English Text:
Do you hear better in one ear than the other?
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes, right ear 168 168
2 Yes, left ear 167 335
7 Refused 0 335
9 No / don't know 1450 1785
. Missing 104 1889

AUXOTSPL - Normal Otoscopy, Left Ear?

Variable Name:
AUXOTSPL
SAS Label:
Normal Otoscopy, Left Ear?
English Text:
Normal: Left Ear Otoscopy
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 1539 1539
2 No (checkbox unchecked) 246 1785
. Missing 104 1889

AUXLOEXC - Excessive Cerumen, Left Ear

Variable Name:
AUXLOEXC
SAS Label:
Excessive Cerumen, Left Ear
English Text:
Excessive Cerumen, Left Ear
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 160 160
2 No (checkbox unchecked) 1625 1785
. Missing 104 1889

AUXLOIMC - Impacted Cerumen, Left Ear

Variable Name:
AUXLOIMC
SAS Label:
Impacted Cerumen, Left Ear
English Text:
Impacted Cerumen, Left Ear
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 71 71
2 No (checkbox unchecked) 1714 1785
. Missing 104 1889

AUXLOCOL - Collapsing Ear Canals, Left Ear

Variable Name:
AUXLOCOL
SAS Label:
Collapsing Ear Canals, Left Ear
English Text:
Collapsing Ear Canal, Left Ear
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 10 10
2 No (checkbox unchecked) 1775 1785
. Missing 104 1889

AUXLOABN - Other Exam Abnormality, Left Ear?

Variable Name:
AUXLOABN
SAS Label:
Other Exam Abnormality, Left Ear?
English Text:
Other Exam Abnormality, Left Ear
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 14 14
2 No (checkbox unchecked) 1771 1785
. Missing 104 1889

AUDLOABC - Comment:Other Ear Exam Abnormality, Left

Variable Name:
AUDLOABC
SAS Label:
Comment:Other Ear Exam Abnormality, Left
English Text:
Other Exam Abnormality, Left, Comment
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Possible Perforated Eardrum 0 0
2 Perforated Eardrum 0 0
3 Possible Infection 6 6
4 TM Scarring/Deformity 3 9
. Missing 1880 1889

AUXROTSP - Normal Otoscopy, Right Ear?

Variable Name:
AUXROTSP
SAS Label:
Normal Otoscopy, Right Ear?
English Text:
Normal: Right Ear Otoscopy
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 1518 1518
2 No (checkbox unchecked) 267 1785
. Missing 104 1889

AUXROEXC - Excessive Cerumen, Right Ear

Variable Name:
AUXROEXC
SAS Label:
Excessive Cerumen, Right Ear
English Text:
Excessive Cerumen, Right Ear
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 189 189
2 No (checkbox unchecked) 1596 1785
. Missing 104 1889

AUXROIMC - Impacted Cerumen, Right Ear

Variable Name:
AUXROIMC
SAS Label:
Impacted Cerumen, Right Ear
English Text:
Impacted Cerumen, Right Ear
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 65 65
2 No (checkbox unchecked) 1720 1785
. Missing 104 1889

AUXROCOL - Collapsing Ear Canals, Right Ear

Variable Name:
AUXROCOL
SAS Label:
Collapsing Ear Canals, Right Ear
English Text:
Collapsing Ear Canal, Right Ear
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 13 13
2 No (checkbox unchecked) 1772 1785
. Missing 104 1889

AUXROABN - Other Exam Abnormality, Right Ear?

Variable Name:
AUXROABN
SAS Label:
Other Exam Abnormality, Right Ear?
English Text:
Other Exam Abnormality, Right Ear
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes (checkbox checked) 13 13
2 No (checkbox unchecked) 1772 1785
. Missing 104 1889

AUDROABC - Comment Other Ear Exam Abnormality Right

Variable Name:
AUDROABC
SAS Label:
Comment Other Ear Exam Abnormality Right
English Text:
Other Exam Abnormality, Right, Comment
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Possible Perforated Eardrum 0 0
2 Perforated Eardrum 3 3
3 Possible Infection 2 5
4 TM Scarring/Deformity 3 8
. Missing 1881 1889

AUXTMEPR - Middle Ear Pressure-Tymp, Rt Ear in daPa

Variable Name:
AUXTMEPR
SAS Label:
Middle Ear Pressure-Tymp, Rt Ear in daPa
English Text:
Middle ear pressure (tympanometry), right ear
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
-400.0000 to 200.0000
Code or Value Value Description Count Cumulative Skip to Item
-276 to 150 Range of Values 1670 1670
555 Compliance <= 0.2 104 1774
777 Refused 0 1774
888 Could not obtain 10 1784
. Missing 105 1889

AUXTPVR - Physical Volume-Tymp, Right Ear in cc

Variable Name:
AUXTPVR
SAS Label:
Physical Volume-Tymp, Right Ear in cc
English Text:
Physical volume (tympanometry), right ear
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
0.0 to 7.0
Code or Value Value Description Count Cumulative Skip to Item
0.3 to 6 Range of Values 1771 1771
777 Refused 0 1771
888 Could not obtain 10 1781
. Missing 108 1889

AUXTWIDR - Tympanometric width, right ear

Variable Name:
AUXTWIDR
SAS Label:
Tympanometric width, right ear
English Text:
Tympanometric width, right ear
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
0.0000 to 500.0000
Code or Value Value Description Count Cumulative Skip to Item
0 to 246 Range of Values 1670 1670
555 Compliance <= 0.2 104 1774
777 Refused 0 1774
888 Could not obtain 10 1784
. Missing 105 1889

AUXTCOMR - Compliance (tympanometry), right ear

Variable Name:
AUXTCOMR
SAS Label:
Compliance (tympanometry), right ear
English Text:
Compliance (tympanometry), right ear
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
0.0000 to 8.0000
Code or Value Value Description Count Cumulative Skip to Item
0 to 4.5 Range of Values 1774 1774
777 Refused 0 1774
888 Could not obtain 10 1784
. Missing 105 1889

AUXTMEPL - Middle Ear Pressure, Tymp, Left in daPa

Variable Name:
AUXTMEPL
SAS Label:
Middle Ear Pressure, Tymp, Left in daPa
English Text:
Middle ear pressure (tympanometry), left ear
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
-400.0000 to 200.0000
Code or Value Value Description Count Cumulative Skip to Item
-288 to 168 Range of Values 1675 1675
555 Compliance <= 0.2 100 1775
777 Refused 0 1775
888 Could not obtain 9 1784
. Missing 105 1889

AUXTPVL - Physical Volume-Tymp, Left ear in cc

Variable Name:
AUXTPVL
SAS Label:
Physical Volume-Tymp, Left ear in cc
English Text:
Physical volume (tympanometry), left ear
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
0.0 to 7.0
Code or Value Value Description Count Cumulative Skip to Item
0.2 to 6.3 Range of Values 1771 1771
777 Refused 0 1771
888 Could not obtain 9 1780
. Missing 109 1889

AUXTWIDL - Tympanometric width, left ear

Variable Name:
AUXTWIDL
SAS Label:
Tympanometric width, left ear
English Text:
Tympanometric width, left ear
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
0.0000 to 500.0000
Code or Value Value Description Count Cumulative Skip to Item
0 to 330 Range of Values 1675 1675
555 Compliance <= 0.2 100 1775
777 Refused 0 1775
888 Could not obtain 9 1784
. Missing 105 1889

AUXTCOML - Compliance (tympanometry), left ear

Variable Name:
AUXTCOML
SAS Label:
Compliance (tympanometry), left ear
English Text:
Compliance (tympanometry), left ear
Target:
Both males and females 20 YEARS - 69 YEARS
Hard Edits:
0.0000 to 8.0000
Code or Value Value Description Count Cumulative Skip to Item
0 to 4.5 Range of Values 1775 1775
777 Refused 0 1775
888 Could not obtain 9 1784
. Missing 105 1889

AUAEAR - Which ear tested first?

Variable Name:
AUAEAR
SAS Label:
Which ear tested first?
English Text:
Which ear tested first?
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Right 952 952
2 Left 824 1776
. Missing 113 1889

AUAMODE - Audio Test Mode-Manual/Automatic/Mixed

Variable Name:
AUAMODE
SAS Label:
Audio Test Mode-Manual/Automatic/Mixed
English Text:
Mode of Audiometric Test (Manual/Automatic/Mixed)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Manual 11 11
2 Automatic 1722 1733
3 Mixed 41 1774
. Missing 115 1889

AUAFMANL - Frequency, Switch to Manual Mode, Left

Variable Name:
AUAFMANL
SAS Label:
Frequency, Switch to Manual Mode, Left
English Text:
Frequency at Which Switched From Auto to Manual Audio Testing (Left)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 None 1755 1755
2 500 Hz 0 1755
3 1000 Hz 1 1756
4 2000 Hz 1 1757
5 3000 Hz 1 1758
6 4000 Hz 1 1759
7 6000 Hz 5 1764
8 8000 Hz 10 1774
. Missing 115 1889

AUAFMANR - Frequency-Switch to Manual Mode, Right

Variable Name:
AUAFMANR
SAS Label:
Frequency-Switch to Manual Mode, Right
English Text:
Frequency at Which Switched From Auto to Manual Audio Testing (Right)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 None 1750 1750
2 500 Hz 1 1751
3 1000 Hz 3 1754
4 2000 Hz 0 1754
5 3000 Hz 4 1758
6 4000 Hz 0 1758
7 6000 Hz 2 1760
8 8000 Hz 14 1774
. Missing 115 1889

AUXU1K1R - Right threshold @ 1000Hz (db)

Variable Name:
AUXU1K1R
SAS Label:
Right threshold @ 1000Hz (db)
English Text:
Right threshold @ 1000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 105 Range of Values 1766 1766
666 No response 0 1766
888 Could not obtain 2 1768
. Missing 121 1889

AUXU500R - Right threshold @ 500Hz (db)

Variable Name:
AUXU500R
SAS Label:
Right threshold @ 500Hz (db)
English Text:
Right threshold @ 500Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 120 Range of Values 1767 1767
666 No response 0 1767
888 Could not obtain 1 1768
. Missing 121 1889

AUXU1K2R - Right Threshold @ 1000Hz-2nd Read (db)

Variable Name:
AUXU1K2R
SAS Label:
Right Threshold @ 1000Hz-2nd Read (db)
English Text:
Right threshold @ 1000Hz (second reading)in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 95 Range of Values 1766 1766
666 No response 0 1766
888 Could not obtain 2 1768
. Missing 121 1889

AUXU2KR - Right threshold @ 2000Hz (db)

Variable Name:
AUXU2KR
SAS Label:
Right threshold @ 2000Hz (db)
English Text:
Right threshold @ 2000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 110 Range of Values 1766 1766
666 No response 1 1767
888 Could not obtain 1 1768
. Missing 121 1889

AUXU3KR - Right threshold @ 3000Hz (db)

Variable Name:
AUXU3KR
SAS Label:
Right threshold @ 3000Hz (db)
English Text:
Right threshold @ 3000Hz in decibels (Hearing Levels)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 110 Range of Values 1764 1764
666 No response 2 1766
888 Could not obtain 2 1768
. Missing 121 1889

AUXU4KR - Right threshold @ 4000Hz (db)

Variable Name:
AUXU4KR
SAS Label:
Right threshold @ 4000Hz (db)
English Text:
Right threshold @ 4000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 120 Range of Values 1764 1764
666 No response 2 1766
888 Could not obtain 2 1768
. Missing 121 1889

AUXU6KR - Right threshold @ 6000Hz (db)

Variable Name:
AUXU6KR
SAS Label:
Right threshold @ 6000Hz (db)
English Text:
Right threshold @ 6000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 120 Range of Values 1763 1763
666 No response 3 1766
888 Could not obtain 2 1768
. Missing 121 1889

AUXU8KR - Right threshold @ 8000Hz (db)

Variable Name:
AUXU8KR
SAS Label:
Right threshold @ 8000Hz (db)
English Text:
Right threshold @ 8000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 110 Range of Values 1761 1761
666 No response 5 1766
888 Could not obtain 2 1768
. Missing 121 1889

AUXU1K1L - Left threshold @ 1000Hz (db)

Variable Name:
AUXU1K1L
SAS Label:
Left threshold @ 1000Hz (db)
English Text:
Left threshold @ 1000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 100 Range of Values 1767 1767
666 No response 1 1768
888 Could not obtain 0 1768
. Missing 121 1889

AUXU500L - Left threshold @ 500Hz (db)

Variable Name:
AUXU500L
SAS Label:
Left threshold @ 500Hz (db)
English Text:
Left threshold @ 500Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 100 Range of Values 1767 1767
666 No response 1 1768
888 Could not obtain 0 1768
. Missing 121 1889

AUXU1K2L - Left threshold @ 1000Hz-2nd Read (db)

Variable Name:
AUXU1K2L
SAS Label:
Left threshold @ 1000Hz-2nd Read (db)
English Text:
Left threshold @ 1000Hz (second reading)in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 100 Range of Values 1766 1766
666 No response 1 1767
888 Could not obtain 1 1768
. Missing 121 1889

AUXU2KL - Left threshold @ 2000Hz (db)

Variable Name:
AUXU2KL
SAS Label:
Left threshold @ 2000Hz (db)
English Text:
Left threshold @ 2000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 115 Range of Values 1767 1767
666 No response 1 1768
888 Could not obtain 0 1768
. Missing 121 1889

AUXU3KL - Left threshold @ 3000Hz (db)

Variable Name:
AUXU3KL
SAS Label:
Left threshold @ 3000Hz (db)
English Text:
Left threshold @ 3000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 110 Range of Values 1765 1765
666 No response 2 1767
888 Could not obtain 1 1768
. Missing 121 1889

AUXU4KL - Left threshold @ 4000Hz (db)

Variable Name:
AUXU4KL
SAS Label:
Left threshold @ 4000Hz (db)
English Text:
Left threshold @ 4000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 115 Range of Values 1766 1766
666 No response 1 1767
888 Could not obtain 1 1768
. Missing 121 1889

AUXU6KL - Left threshold @ 6000Hz (db)

Variable Name:
AUXU6KL
SAS Label:
Left threshold @ 6000Hz (db)
English Text:
Left threshold @ 6000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 110 Range of Values 1759 1759
666 No response 6 1765
888 Could not obtain 2 1767
. Missing 122 1889

AUXU8KL - Left threshold @ 8000Hz (db)

Variable Name:
AUXU8KL
SAS Label:
Left threshold @ 8000Hz (db)
English Text:
Left threshold @ 8000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
-10 to 105 Range of Values 1755 1755
666 No response 9 1764
888 Could not obtain 2 1766
. Missing 123 1889

AUXR1K1R - Right retest threshold @ 1000Hz (db)

Variable Name:
AUXR1K1R
SAS Label:
Right retest threshold @ 1000Hz (db)
English Text:
Right retest threshold @ 1000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 90 Range of Values 13 13
666 No response 0 13
888 Could not obtain 0 13
. Missing 1876 1889

AUXR5CR - Right retest threshold @ 500Hz (db)

Variable Name:
AUXR5CR
SAS Label:
Right retest threshold @ 500Hz (db)
English Text:
Right retest threshold @ 500Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
5 to 105 Range of Values 20 20
666 No response 0 20
888 Could not obtain 0 20
. Missing 1869 1889

AUXR1K2R - Right Retest Threshold 1000Hz-2nd Read

Variable Name:
AUXR1K2R
SAS Label:
Right Retest Threshold 1000Hz-2nd Read
English Text:
Right retest threshold @ 1000Hz, second reading (db)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
25 to 40 Range of Values 3 3
666 No response 0 3
888 Could not obtain 0 3
. Missing 1886 1889

AUXR2KR - Right retest threshold @ 2000Hz (db)

Variable Name:
AUXR2KR
SAS Label:
Right retest threshold @ 2000Hz (db)
English Text:
Right retest threshold @ 2000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
65 to 90 Range of Values 8 8
666 No response 0 8
888 Could not obtain 0 8
. Missing 1881 1889

AUXR3KR - Right retest threshold @ 3000Hz (db)

Variable Name:
AUXR3KR
SAS Label:
Right retest threshold @ 3000Hz (db)
English Text:
Right retest threshold @ 3000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
40 to 115 Range of Values 11 11
666 No response 0 11
888 Could not obtain 0 11
. Missing 1878 1889

AUXR4KR - Right retest threshold @ 4000Hz (db)

Variable Name:
AUXR4KR
SAS Label:
Right retest threshold @ 4000Hz (db)
English Text:
Right retest threshold @ 4000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
40 to 115 Range of Values 8 8
666 No response 0 8
888 Could not obtain 0 8
. Missing 1881 1889

AUXR6KR - Right retest threshold @ 6000Hz (db)

Variable Name:
AUXR6KR
SAS Label:
Right retest threshold @ 6000Hz (db)
English Text:
Right retest threshold @ 6000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
45 to 85 Range of Values 12 12
666 No response 2 14
888 Could not obtain 0 14
. Missing 1875 1889

AUXR8KR - Right retest threshold @ 8000Hz (db)

Variable Name:
AUXR8KR
SAS Label:
Right retest threshold @ 8000Hz (db)
English Text:
Right retest threshold @ 8000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
35 to 95 Range of Values 9 9
666 No response 2 11
888 Could not obtain 0 11
. Missing 1878 1889

AUXR1K1L - Left retest threshold @ 1000Hz (db)

Variable Name:
AUXR1K1L
SAS Label:
Left retest threshold @ 1000Hz (db)
English Text:
Left retest threshold @ 1000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
5 to 85 Range of Values 23 23
666 No response 0 23
888 Could not obtain 0 23
. Missing 1866 1889

AUXR5CL - Left retest threshold @ 500Hz (db)

Variable Name:
AUXR5CL
SAS Label:
Left retest threshold @ 500Hz (db)
English Text:
Left retest threshold @ 500Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
50 to 90 Range of Values 12 12
666 No response 0 12
888 Could not obtain 0 12
. Missing 1877 1889

AUXR1K2L - Left Retest Threshold 1000-2nd Read

Variable Name:
AUXR1K2L
SAS Label:
Left Retest Threshold 1000-2nd Read
English Text:
Left retest threshold @ 1000Hz, second reading in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
50 50 1 1
666 No response 0 1
888 Could not obtain 0 1
. Missing 1888 1889

AUXR2KL - Left retest threshold @ 2000Hz (db)

Variable Name:
AUXR2KL
SAS Label:
Left retest threshold @ 2000Hz (db)
English Text:
Left retest threshold @ 2000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
45 to 95 Range of Values 11 11
666 No response 0 11
888 Could not obtain 0 11
. Missing 1878 1889

AUXR3KL - Left retest threshold @ 3000Hz (db)

Variable Name:
AUXR3KL
SAS Label:
Left retest threshold @ 3000Hz (db)
English Text:
Left retest threshold @ 3000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
45 to 95 Range of Values 11 11
666 No response 0 11
888 Could not obtain 0 11
. Missing 1878 1889

AUXR4KL - Left retest threshold @ 4000Hz (db)

Variable Name:
AUXR4KL
SAS Label:
Left retest threshold @ 4000Hz (db)
English Text:
Left retest threshold @ 4000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
35 to 110 Range of Values 13 13
666 No response 0 13
888 Could not obtain 0 13
. Missing 1876 1889

AUXR6KL - Left retest threshold @ 6000Hz (db)

Variable Name:
AUXR6KL
SAS Label:
Left retest threshold @ 6000Hz (db)
English Text:
Left retest threshold @ 6000Hz in decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
25 to 100 Range of Values 13 13
666 No response 0 13
888 Could not obtain 0 13
. Missing 1876 1889

AUXR8KL - Left retest threshold @ 8000Hz (db)

Variable Name:
AUXR8KL
SAS Label:
Left retest threshold @ 8000Hz (db)
English Text:
Left retest threshold @ 8000Hzin decibels (Hearing Level)
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
15 to 95 Range of Values 17 17
666 No response 0 17
888 Could not obtain 0 17
. Missing 1872 1889

AUAREQC - Right Ear Quality Code

Variable Name:
AUAREQC
SAS Label:
Right Ear Quality Code
English Text:
Right Ear Quality Code
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Good - tympanogram is smooth and symmetrical 1302 1302
2 Adequate - tympanogram is 'noisy' but adequate for interpretation 435 1737
3 Poor - tympanogram cannot be interpreted 15 1752
7 SP Refused Tympanometry 0 1752
8 There was no tymp 4 1756
9 Equivocal - tympanogram cannot be evaluated without further information 22 1778
888 CNO - technician could not obtain the tympanogram 1 1779
. Missing 110 1889

AUALEQC - Left Ear Quality Code

Variable Name:
AUALEQC
SAS Label:
Left Ear Quality Code
English Text:
Left Ear Quality Code
Target:
Both males and females 20 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Good - tympanogram is smooth and symmetrical 1329 1329
2 Adequate - tympanogram is 'noisy' but adequate for interpretation 399 1728
3 Poor - tympanogram cannot be interpreted 24 1752
7 SP Refused Tympanometry 0 1752
8 There was no tymp 2 1754
9 Equivocal - tympanogram cannot be evaluated without further information 22 1776
888 CNO - technician could not obtain the tympanogram 3 1779
. Missing 110 1889