Table of Contents

Component Description

The medical conditions section (variable name prefix MCQ), made available through the Research Data Center (RDC), provides self-reported personal-interview data on a broad range of health conditions.These questions were asked in the NHANES National Youth Fitness Study (NNYFS) and of NHANES participants aged 3 to 15 years, during the second year of the 2011-2012 NHANES cycle.

Eligible Sample

All participants aged 3-15 years were asked to respond to this section. The questions were asked of all survey participants by proxy. Frequency counts were verified during the preparation of the file.

Interview Setting and Mode of Administration

These questions were asked, in the home, by trained interviewers using the Computer-Assisted Personal Interviewing (CAPI) system. The survey questionnaire is available on the NHANES website at https://www.cdc.gov/nchs/nhanes/index.htm.

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

The data were reviewed and edited for completeness, consistency, and illogical values.

Analytic Notes

Please refer to the Analytic Guidelines for further details on the use of sample weights and other analytic issues.

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 3 YEARS - 15 YEARS

MCQ010 - Ever been told you have asthma

Variable Name:
MCQ010
SAS Label:
Ever been told you have asthma
English Text:
he following questions are about different medical conditions. Has a doctor or other health professional ever told {you/SP} that {you have/s/he/SP has} asthma (az-ma)?
English Instructions:
CAPI INSTRUCTION: IF SP AGE >= 16, DISPLAY "YOU" AND "YOU HAVE". IF SP AGE = 12-15, DISPLAY "SP" AND "S/HE HAS". IF SP AGE < 12, DISPLAY "YOU" AND "SP HAS". INTERVIEWER: DO NOT ACCEPT SELF-DIAGNOSED OR DIAGNOSED BY A PERSON WHO IS NOT A DOCTOR OR OTHER HEALTH PROFESSIONAL.
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 491 491
2 No 2402 2893
7 Refused 0 2893
9 Don't know 0 2893
. Missing 0 2893

MCQ035 - Still have asthma

Variable Name:
MCQ035
SAS Label:
Still have asthma
English Text:
{Do you/Does SP} still have asthma (az-ma)?
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 322 322
2 No 167 489
7 Refused 0 489
9 Don't know 2 491
. Missing 2402 2893

MCQ040 - Had asthma attack in past year

Variable Name:
MCQ040
SAS Label:
Had asthma attack in past year
English Text:
During the past 12 months, {have you/has SP} had an episode of asthma (az-ma) or an asthma attack?
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 166 166
2 No 156 322
7 Refused 0 322
9 Don't know 0 322
. Missing 2571 2893

MCQ051 - Dr. prescribed medication for asthma?

Variable Name:
MCQ051
SAS Label:
Dr. prescribed medication for asthma?
English Text:
During the past 3 months, {have you/has SP} taken medication prescribed by a doctor or other health professionals for asthma?
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 211 211
2 No 111 322
7 Refused 0 322
9 Don't know 0 322
. Missing 2571 2893

MCQ140 - Trouble seeing even with glass/contacts

Variable Name:
MCQ140
SAS Label:
Trouble seeing even with glass/contacts
English Text:
{Do you/Does SP} have trouble seeing, even when wearing glasses or contact lenses, if {you/he/she} wear{s} them?
Target:
Both males and females 3 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 142 142
2 No 2746 2888
7 Refused 0 2888
9 Don't know 5 2893
. Missing 0 2893

MCQ149 - Menstrual periods started yet?

Variable Name:
MCQ149
SAS Label:
Menstrual periods started yet?
English Text:
Have {SP's} periods or menstrual (men-stral) cycles started yet?
Target:
Females only 8 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 262 262
2 No 445 707
7 Refused 1 708
9 Don't know 0 708
. Missing 2185 2893

MCQ151 - Age at first menstrual period

Variable Name:
MCQ151
SAS Label:
Age at first menstrual period
English Text:
How old was {SP} when she had {her} first menstrual period?
English Instructions:
HARD EDITS: MAXIMUM OF 15 AND AGE OF ONSET MUST BE LESS THAN OR EQUAL TO CURRENT AGE. SOFT EDIT: IF AGE LESS THAN 7.
Target:
Females only 8 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
9 to 14 Range of Values 261 261
77 Refused 0 261
99 Don't know 1 262
. Missing 2631 2893