Table of Contents

Locator Record

Title: Immunization (IMQ_D )
Contact Number: 1-866-441-NCHS
Years of Content: 2005 - 2006
First Published: January, 2008
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Data on immunization with the hepatitis A and hepatitis B vaccine for NHANES participants age 2 and above.
Record Source: NHANES 2005 - 2006
Survey Methodology: NHANES 2005 - 2006 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 Immunization section (prefix IMQ; questions IMQ.011 and IMQ.020) provides sample person interview data on immunization with the hepatitis A and hepatitis B vaccine for participants age 2 and above. The number of doses received is also obtained since both vaccines are multi-dose. For minors, the questions were answered via a proxy respondent, generally a parent or guardian.

Eligible Sample

All survey participants 2 years of age and older are asked about hepatitis A and B vaccination.

Interview Setting and Mode of Administration

The immunization questionnaire was done before the physical examination, in the home, using the Computer-Assisted Personal Interviewing-CAPI (interviewer administered) system. Persons 16 years of age and older and emancipated minors were interviewed directly. A proxy provided information for survey participants who were under 16 years of age and for individuals who could not answer the questions themselves.

The Interviewer Procedure Manuals and Survey Questionnaires and Exam Manuals can be found on the NHANES website.

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

Participants’ questionnaire interview responses were entered into a laptop computer and then uploaded to the NHANES computerized database in the same manner as other sections of the Sample Person Questionnaire. The data were edited for completeness, consistency, and illogical values.

Analytic Notes

IMQ questionnaire data was collected on a full sample of respondents and can be analyzed in conjunction with results from MEC laboratory data, which has measures of hepatitis A antibody (on those age 6 or more years, LBXHA) and hepatitis B surface antibody (on those age 2 or more years, LBXHBS). Analysts should review all NHANES laboratory 2 (Hepatitis Laboratory) data release documentation and statistical and analytic guidelines prior to beginning data analysis.

Although these data were collected as part of the household questionnaire, if they are merged with the MEC exam data, exam weights should be used for analyses.

Question IMQ011 in NHANES 2005-2006 is comparable to question IMD010 in NHANES 2003-2004, and question IMQ010 in NHANES 2001-2002 and NHANES 1999-2000.

Question IMQ030, which asks about whether or not participants have had the pneumonia vaccination, has been dropped for the 2005-2006 cycle.

Please refer to the Analytic Guidelines for further details on the use of sample weights and other analytic issues. The Analytic Guidelines 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 0 YEARS - 150 YEARS

IMQ005 - CHECK ITEM

Variable Name:
IMQ005
English Instructions:
CHECK ITEM IMQ.005: IF SP AGE >= 2, CONTINUE. OTHERWISE, GO TO IMQ.020.
Target:
Both males and females 0 YEARS - 150 YEARS

IMQ011 - Received hepatitis A vaccine

Variable Name:
IMQ011
SAS Label:
Received hepatitis A vaccine
English Text:
{Have you/Has SP} ever received hepatitis A vaccine? This vaccine is given as a two dose series routinely to some children older than 2 years, and to some adults and people who travel outside the United States. It has only been available since 1995.
English Instructions:
CODE 'LESS THAN 2 DOSES' ONLY IF MENTIONED BY RESPONDENT
Target:
Both males and females 2 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes, at least 2 doses 2372 2372
2 Less than 2 doses 293 2665
3 No doses 5673 8338
7 Refused 1 8339
9 Don't know 1124 9463
. Missing 885 10348

IMQ020 - Received hepatitis B 3 dose series

Variable Name:
IMQ020
SAS Label:
Received hepatitis B 3 dose series
English Text:
{Have you/Has SP} ever received the 3-dose series of the hepatitis B vaccine? This vaccine is given in three separate doses and has been recommended for all newborn infants since 1991. In 1995, it was recommended that adolescents be given the vaccine. Persons who may be exposed to other people's blood, such as health care workers, also may have received the vaccine.
English Instructions:
CODE 'LESS THAN 3 DOSES' ONLY IF MENTIONED BY RESPONDENT
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes all 3 doses 5217 5217
2 Less than 3 doses 614 5831
3 No doses 3672 9503
7 Refused 1 9504
9 Don't know 844 10348
. Missing 0 10348