Table of Contents

Locator Record

Title: Respiratory Health & Disease (RDQ_E )
Contact Number: 1-866-441-NCHS
Years of Content: 2007 - 2008
First Published: January, 2010
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Respiratory Health & Disease Symptom Questionnaire
Record Source: NHANES 2007 - 2008
Survey Methodology: NHANES 2007 - 2008 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 Respiratory Disease Section (prefix RDQ) provides interview data for respiratory symptoms that may be related to chronic bronchitis or asthma. The symptoms profiled include cough, phlegm production, and wheezing. Data is also collected on trigger factors for these symptoms, for medical treatment and for related functional impairments.

Topics:

12 Month Period Prevalence of:

Eligible Sample

Questions regarding a history of cough and phlegm production were administered only to Survey Participants ages 40 years and above, except for RDQ140 (History of Dry Nocturnal Cough) which was administered to Survey Participants 1+ years.

Questions regarding a history of wheezing were administered to Survey Participants ages 1+ years except for RDQ137 which was administered to Survey Participants ages 6 to 69 years (school-age and working-age persons). The question series RDQ120 through RDQ137 was administered to all participants with a history of wheezing.

Interview Setting and Mode of Administration

These questions were asked before the physical examination, in the home, using the Computer-Assisted Personal Interviewing-CAPI (interviewer administered) system.

Quality Assurance & Quality Control

The CAPI system is programmed with built-in consistency checks to reduce data entry errors. CAPI also uses online help screens to assist interviewers in defining key terms used in the questionnaire.

Data Processing and Editing

Data editing (for example “top coding” of continuous variables) is documented in the RDQ Section Codebook.

Analytic Notes

These data were collected as part of the NHANES Household Questionnaire Interview and NHANES Household Interview weights should be used if only questionnaire data is analyzed. However, if RDQ_E questionnaire data is merged with the MEC examination data, then NHANES MEC examination sample weights should be used for the analyses.

Current NHANES questionnaire data collection relating to respiratory symptoms is based on prior NHANES surveys as well as validated survey instruments. It is recommended that data analysts be familiar with current practice and issues in the epidemiologic investigation of respiratory disease. (Pierce, et al.; Halbert, et al; Celli, et al; Pauwels, et al)

Related NHANES 2007-2008 Questionnaire Datasets:

Please note that the hay fever question AGQ030 was also asked in the NHANES 2005-06 survey cycle as a part of the 2005-6 Allergy Questionnaire.

Please refer to the NHANES Analytic Guidelines and the on-line NHANES Tutorial for further details on the use of sample weights and other analytic issues. Both of these are available on the NHANES website.

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 1 YEARS - 150 YEARS

RDQ005A - CHECK ITEM

Variable Name:
RDQ005A
English Instructions:
IF AGE < 40 YEARS, GO TO RDQ070. OTHERWISE, CONTINUE.
Target:
Both males and females 1 YEARS - 150 YEARS

RDQ031 - Coughing most days - over 3 mo period

Variable Name:
RDQ031
SAS Label:
Coughing most days - over 3 mo period
English Text:
{Do you/Does SP} usually cough on most days for 3 consecutive months or more during the year?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 473 473
2 No 3548 4021 RDQ050
7 Refused 0 4021 RDQ050
9 Don't know 3 4024 RDQ050
. Missing 5642 9666

RDD040 - # years had cough problem

Variable Name:
RDD040
SAS Label:
# years had cough problem
English Text:
For how many years {have you/has SP} had this cough?
English Instructions:
ENTER NUMBER OF YEARS. IF LESS THAN 1 YEAR, ENTER 1; IF 70 OR MORE YEARS ENTER 70
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 67 Range of Values 453 453
70 70 or more 4 457
77777 Refused 0 457
99999 Don't know 16 473
. Missing 9193 9666

RDQ050 - Bring up phlegm most days - 3 mo period

Variable Name:
RDQ050
SAS Label:
Bring up phlegm most days - 3 mo period
English Text:
{Do you/Does SP} bring up phlegm on most days for 3 consecutive months or more during the year?
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 401 401
2 No 3622 4023 RDQ070
7 Refused 0 4023 RDQ070
9 Don't know 1 4024 RDQ070
. Missing 5642 9666

RDD060 - # years bringing up phlegm problem

Variable Name:
RDD060
SAS Label:
# years bringing up phlegm problem
English Text:
For how many years, {have you/has SP} had trouble with phlegm?
English Instructions:
ENTER NUMBER OF YEARS. IF LESS THAN 1 YEAR, ENTER 1; IF 70 OR MORE YEARS ENTER 70
Target:
Both males and females 40 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 61 Range of Values 381 381
70 70 or more 4 385
77777 Refused 0 385
99999 Don't know 16 401
. Missing 9265 9666

RDQ070 - Wheezing or whistling in chest - past yr

Variable Name:
RDQ070
SAS Label:
Wheezing or whistling in chest - past yr
English Text:
In the past 12 months {have you/has SP} had wheezing or whistling in {your/his/her} chest?
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 1331 1331
2 No 8330 9661 RDQ140
7 Refused 0 9661 RDQ140
9 Don't know 5 9666 RDQ140
. Missing 0 9666

RDQ080 - # wheezing/whistling attacks past year

Variable Name:
RDQ080
SAS Label:
# wheezing/whistling attacks past year
English Text:
[In the past 12 months], how many attacks of wheezing or whistling {have you/has SP} had?
English Instructions:
IF 12 OR MORE EPISODES, ENTER 12; ENTER NUMBER OF EPISODES.
Target:
Both males and females 1 YEARS - 150 YEARS
Hard Edits:
1 to 12
Code or Value Value Description Count Cumulative Skip to Item
1 to 12 Range of Values 1300 1300
7777 Refused 0 1300
9999 Don't know 31 1331
. Missing 8335 9666

RDQ090 - Wheezing disturb sleep in past year

Variable Name:
RDQ090
SAS Label:
Wheezing disturb sleep in past year
English Text:
[In the past 12 months], how often, on average, has {your/SP's} sleep been disturbed because of wheezing? Would you say this happens . . .
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Never, 632 632
1 1 or more nights per week, or 389 1021
2 Less than 1 night per week? 304 1325
7 Refused 0 1325
9 Don't know 6 1331
. Missing 8335 9666

RDQ100 - Chest sound wheezy during exercise

Variable Name:
RDQ100
SAS Label:
Chest sound wheezy during exercise
English Text:
[In the past 12 months], has {your/SP's} chest sounded wheezy during or after exercise or physical activity?
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 630 630
2 No 688 1318
7 Refused 0 1318
9 Don't know 13 1331
. Missing 8335 9666

RDD120 - # medical visits for wheezing attacks

Variable Name:
RDD120
SAS Label:
# medical visits for wheezing attacks
English Text:
[In the past 12 months], how many times {have you/has SP} gone to the doctor's office or the hospital emergency room for one or more of these attacks of wheezing or whistling?
English Instructions:
ENTER NUMBER. IF NEVER, ENTER 0;IF 20 OR MORE MONTHS ENTER 20.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 14 Range of Values 1326 1326
20 20 or more 2 1328
7777 Refused 0 1328
9999 Don't know 3 1331
. Missing 8335 9666

RDQ134 - Doctor prescribe wheezing medication

Variable Name:
RDQ134
SAS Label:
Doctor prescribe wheezing medication
English Text:
(In the past 12 months), (have you/has SP) taken medication, prescribed by a doctor, for wheezing or whistling?
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 786 786
2 No 544 1330
7 Refused 0 1330
9 Don't know 1 1331
. Missing 8335 9666

RDQ135 - Amount wheezing limits usual activity

Variable Name:
RDQ135
SAS Label:
Amount wheezing limits usual activity
English Text:
During the past 12 months, how much did {you/SP} limit {your/his/her} usual activities due to wheezing or whistling? Would you say�
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Not at all, 739 739
2 A little, 324 1063
3 A fair amount, 126 1189
4 A moderate amount, or 60 1249
5 A lot? 82 1331
7 Refused 0 1331
9 Don't know 0 1331
. Missing 8335 9666

RDQ136 - CHECK ITEM

Variable Name:
RDQ136
English Instructions:
BOX 4. CHECK ITEM RDQ136: IF AGE BETWEEN 6 AND 69 YEARS THEN CONTINUE. OTHERWISE, GO TO RDQ140.
Target:
Both males and females 1 YEARS - 150 YEARS

RDQ137 - # Work/school days lost due to wheezing

Variable Name:
RDQ137
SAS Label:
# Work/school days lost due to wheezing
English Text:
During the past 12 months, how many days of work or school did {you/SP} miss due to wheezing or whistling?
Target:
Both males and females 6 YEARS - 69 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 None 758 758
1 1 to 7 186 944
2 8 to 30 38 982
3 31 plus 16 998
7 Refused 2 1000
9 Don't know 7 1007
. Missing 8659 9666

RDQ140 - Had dry cough at night in past year

Variable Name:
RDQ140
SAS Label:
Had dry cough at night in past year
English Text:
[In the past 12 months], {have you/has SP} had a dry cough at night not counting a cough associated with a cold or chest infection lasting 14 days or more?
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 524 524
2 No 9139 9663
7 Refused 0 9663
9 Don't know 3 9666
. Missing 0 9666

AGQ030 - Episode of hay fever in past 12 months?

Variable Name:
AGQ030
SAS Label:
Episode of hay fever in past 12 months?
English Text:
During the past 12 months, {have you/has SP} had an episode of hay fever?
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 1139 1139
2 No 8485 9624
7 Refused 0 9624
9 Don't know 42 9666
. Missing 0 9666