Table of Contents

Locator Record

Title: Balance (BAQ_C )
Contact Number: 1-866-441-NCHS
Years of Content: 2003 - 2004
First Published: November, 2005
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Balance
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 Balance Questionnaire (variable name prefix BAQ) provides sample person interview data on the self-reported prevalence of balance, dizziness, and falls. This is of importance because of the increasing morbidity and mortality associated with balance disorders among older persons in the U.S.

Topics included in the section include:

Eligible Sample

All sample persons 40 years of age and older were asked these questions. There were no exclusions for this questionnaire segment.

Interview Setting and Mode of Administration

A trained household interviewer administrated these questions to the survey participant during the household interview. The information was recorded using a computer-assisted personal interview (CAPI) system. Some of the questions in the VIQ section required the use of printed hand cards. When necessary, the household interviewers read the hand card selections to the respondent.

Quality Assurance & Quality Control

Balance questionnaire data was systematically reviewed for logical, processing and data input errors on a periodic basis during the process of data collection.

The computer CAPI system had built-in consistency checks, online information screens that provided the interviewers with information about the terms used in the questionnaires, and hard and soft edit checks to reduce the number of keying entry errors. All of the interviews were reviewed by the NHANES field office staff for accuracy and completeness.

Additional details describing the quality assurance/quality control processes are provided in the survey procedures manuals.

Data Processing and Editing

The 2003–2004 Balance Questionnaire data were verified prior to public release.

Analytic Notes

Balance data analysis is complex and requires 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 specialty consultation be obtained to help formulate and review the results of the analysis.

Full sample interview weights should be employed if BAQ statistical analysis involves only NHANES questionnaire data. Although these data were collected as a part of the household questionnaire, if they are merged with NHANES MEC data, MEC examination sample weights should be used for the analysis.
All the questions in the current NHANES balance questionnaire were newly developed for this survey in consultation with expert consultants from the National Institute on Deafness and Other Communications Disorders (NIDCD).

Balance Physical Examination data are found in the Balance Section of the NHANES 2003–2004 Examination Files.

Please refer to the Analytic Guidelines for further details on the use of sample weights and other analytic issues at http://www.cdc.gov/nchs/nhanes/survey_methods.htm.

The BAQ data are publicly available at www.cdc.gov/nchs/nhanes.htm.

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 40 YEARS - 150 YEARS

BAQ010 - Dizzy/balance/falling problems/past yr

Variable Name:
BAQ010
SAS Label:
Dizzy/balance/falling problems/past yr
English Text:
During the past 12 months, {have you/has SP} had dizziness, difficulty with balance or difficulty with falling?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 912 912
2 No 2386 3298 BAQ070
7 Refused 0 3298 BAQ070
9 Don't know 1 3299 BAQ070
. Missing 0 3299

BAQ020A - Dizziness problems in past year

Variable Name:
BAQ020A
SAS Label:
Dizziness problems in past year
English Text:
Which of these problems {have you/has SP} had . . .dizziness?
English Instructions:
CAPI INSTRUCTION: TEXT OF QUESTION SHOULD BE OPTIONAL AFTER THE FIRST TIME.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 663 663 BAQ030a
2 No 249 912
7 Refused 0 912
9 Don't know 0 912
. Missing 2387 3299

BAQ020B - Balance problems in past year

Variable Name:
BAQ020B
SAS Label:
Balance problems in past year
English Text:
Which of these problems {have you/has SP} had . . .difficulty with balance?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 613 613 BAQ030b
2 No 298 911
7 Refused 0 911
9 Don't know 1 912
. Missing 2387 3299

BAQ020C - Falling problems in past year

Variable Name:
BAQ020C
SAS Label:
Falling problems in past year
English Text:
Which of these problems {have you/has SP} had . . .difficulty with falling?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 271 271
2 No 641 912
7 Refused 0 912
9 Don't know 0 912
. Missing 2387 3299

BAQ030A - How long did dizziness last

Variable Name:
BAQ030A
SAS Label:
How long did dizziness last
English Text:
How long did the... dizziness last? Would you say less than two weeks, 2 weeks to 3 months, or more than 3 months?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Less than 2 weeks 459 459 BAQ020b
2 2 weeks to 3 months 44 503 BAQ020b
3 More than 3 months 156 659 BAQ020b
7 Refused 0 659 BAQ020b
9 Don't know 4 663 BAQ020b
. Missing 2636 3299

BAQ030B - How long did balance problem last

Variable Name:
BAQ030B
SAS Label:
How long did balance problem last
English Text:
How long did the... difficulty with balance last? Would you say less than two weeks, 2 weeks to 3 months, or more than 3 months?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Less than 2 weeks 307 307 BAQ020c
2 2 weeks to 3 months 51 358 BAQ020c
3 More than 3 months 254 612 BAQ020c
7 Refused 0 612 BAQ020c
9 Don't know 1 613 BAQ020c
. Missing 2686 3299

BAQ040 - Get dizzy when turn over in bed

Variable Name:
BAQ040
SAS Label:
Get dizzy when turn over in bed
English Text:
{Do you/Does SP} get dizzy when {you/s/he} turn{s} over in bed?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 151 151
2 No 752 903
7 Refused 0 903
9 Don't know 9 912
. Missing 2387 3299

BAQ050 - CHECK ITEM

Variable Name:
BAQ050
English Instructions:
BOX 1. CHECK ITEM BAQ.050: IF YES (CODE 1) IN BAQ.020 A OR B, CONTINUE. OTHERWISE, GO TO BAQ.070.
Target:
Both males and females 40 YEARS - 150 YEARS

BAQ060A - Off balance due to cold or flu

Variable Name:
BAQ060A
SAS Label:
Off balance due to cold or flu
English Text:
Which of the things on this list, if any, were related to {your/SP's} dizziness or balance problem?
English Instructions:
CODE ALL THAT APPLY. HAND CARD BAQ1.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 A cold or the flu 52 52
77 Refused 0 52
99 Don't know 63 115
. Missing 3184 3299

BAQ060B - Off balance due to injury or accident

Variable Name:
BAQ060B
SAS Label:
Off balance due to injury or accident
English Text:
Which of the things on this list, if any, were related to {your/SP's} dizziness or balance problem?
English Instructions:
CODE ALL THAT APPLY. HAND CARD BAQ1.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 Injuries or accidents 79 79
. Missing 3220 3299

BAQ060C - Off balance due to drugs or medicine

Variable Name:
BAQ060C
SAS Label:
Off balance due to drugs or medicine
English Text:
Which of the things on this list, if any, were related to {your/SP's} dizziness or balance problem?
English Instructions:
CODE ALL THAT APPLY. HAND CARD BAQ1.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
3 Use of drugs or medications 183 183
. Missing 3116 3299

BAQ060D - Off balance due to aging

Variable Name:
BAQ060D
SAS Label:
Off balance due to aging
English Text:
Which of the things on this list, if any, were related to {your/SP's} dizziness or balance problem?
English Instructions:
CODE ALL THAT APPLY. HAND CARD BAQ1.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
4 Age or getting older 291 291
. Missing 3008 3299

BAQ060E - Off balance due to surgery

Variable Name:
BAQ060E
SAS Label:
Off balance due to surgery
English Text:
Which of the things on this list, if any, were related to {your/SP's} dizziness or balance problem?
English Instructions:
CODE ALL THAT APPLY. HAND CARD BAQ1.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
5 Surgery 30 30
. Missing 3269 3299

BAQ060F - Off balance due to hearing problem

Variable Name:
BAQ060F
SAS Label:
Off balance due to hearing problem
English Text:
Which of the things on this list, if any, were related to {your/SP's} dizziness or balance problem?
English Instructions:
CODE ALL THAT APPLY. HAND CARD BAQ1.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
6 Hearing problems - including ringing in the ears 134 134
. Missing 3165 3299

BAQ060G - Off balance due to vision problem

Variable Name:
BAQ060G
SAS Label:
Off balance due to vision problem
English Text:
Which of the things on this list, if any, were related to {your/SP's} dizziness or balance problem?
English Instructions:
CODE ALL THAT APPLY. HAND CARD BAQ1.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
7 Vision or seeing problems 75 75
. Missing 3224 3299

BAQ060H - Nothing related to balance problem

Variable Name:
BAQ060H
SAS Label:
Nothing related to balance problem
English Text:
Which of the things on this list, if any, were related to {your/SP's} dizziness or balance problem?
English Instructions:
CODE ALL THAT APPLY. HAND CARD BAQ1.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
8 None 234 234
. Missing 3065 3299

BAQ070 - Received treatment for dizziness/balance

Variable Name:
BAQ070
SAS Label:
Received treatment for dizziness/balance
English Text:
{Have you/Has SP} ever been treated by a doctor or other health professional for dizziness, a balance problem, or falling?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 418 418
2 No 2880 3298 BAQ100
7 Refused 0 3298 BAQ100
9 Don't know 1 3299 BAQ100
. Missing 0 3299

BAQ075 - How long ago were you treated

Variable Name:
BAQ075
SAS Label:
How long ago were you treated
English Text:
How long ago {were you/was SP} treated? Would you say . . .
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Less than 1 year ago, 187 187
2 1 to 5 years ago, or 123 310
3 5 years or more ago? 107 417
7 Refused 0 417
9 Don't know 1 418
. Missing 2881 3299

BAQ080A - Did treatment involve medication

Variable Name:
BAQ080A
SAS Label:
Did treatment involve medication
English Text:
Did this treatment involve. . .medication?
English Instructions:
CAPI INSTRUCTION: TEXT SHOULD BE OPTIONAL [ ] AFTER FIRST ITEM.
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 300 300
2 No 110 410
7 Refused 0 410
9 Don't know 8 418
. Missing 2881 3299

BAQ080B - Did treatment involve surgery to ear

Variable Name:
BAQ080B
SAS Label:
Did treatment involve surgery to ear
English Text:
Did this treatment involve. . .surgery to the ear?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 6 6
2 No 412 418
7 Refused 0 418
9 Don't know 0 418
. Missing 2881 3299

BAQ080C - Did treatment involve other type surgery

Variable Name:
BAQ080C
SAS Label:
Did treatment involve other type surgery
English Text:
Did this treatment involve. . .some other type of surgery?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 15 15
2 No 403 418
7 Refused 0 418
9 Don't know 0 418
. Missing 2881 3299

BAQ080D - Did treatment involve exercises

Variable Name:
BAQ080D
SAS Label:
Did treatment involve exercises
English Text:
Did this treatment involve. . .exercises or physical therapy?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 47 47
2 No 371 418
7 Refused 0 418
9 Don't know 0 418
. Missing 2881 3299

BAQ090 - Treatment affect on dizziness/balance

Variable Name:
BAQ090
SAS Label:
Treatment affect on dizziness/balance
English Text:
As a result of this treatment, did {your/SP's} condition. . .
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Get better, 304 304
2 Get worse, or 9 313
3 Stay the same? 101 414
7 Refused 0 414
9 Don't know 4 418
. Missing 2881 3299

BAQ100 - Blood relative dizziness/balance problem

Variable Name:
BAQ100
SAS Label:
Blood relative dizziness/balance problem
English Text:
Have any of {your/SP's} biological, that is, blood relatives (grandparents, parents, brothers, or sisters) had a problem with dizziness, balance, or falling not related to aging?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 607 607
2 No 2503 3110
7 Refused 0 3110
9 Don't know 189 3299
. Missing 0 3299