Table of Contents

Locator Record

Title: Diabetes (DIQ_F )
Contact Number: 1-866-441-NCHS
Years of Content: 2009 - 2010
First Published: September, 2011
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Diabetes questionnaire focused on self-reported diabetes, prediabetes, use of insulin, use of oral hypoglycemic agents, and diabetes related retinopathy.
Record Source: NHANES 2009 - 2010
Survey Methodology: NHANES 2009 - 2010 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 diabetes section (prefix DIQ) provides personal interview data on diabetes, prediabetes, use of insulin or oral hypoglycemic medications, and diabetic retinopathy. It also provides self-reported information on awareness of risk factors for diabetes, and medical or personal cares associated with diabetes.

Eligible Sample

All survey participants aged 1 year and older were eligible. The questions asked varied by age and history of diabetes. Please refer to check items in the diabetes questionnaire and corresponding codebook for question specific details about the eligible target group.

Interview Setting and Mode of Administration

These questions were asked, in the home, by trained interviewers using the Computer-Assisted Personal Interviewing (CAPI) system. Hand cards showing response categories were also used for some questions. When necessary, household interviewers read the hand cards to respondents. 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.

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

Frequency counts were checked, “skip” patterns were verified, and the reasonableness of question responses was reviewed. Edits were made to some variables to ensure the completeness, consistency, and analytic usefulness of the data. Edits were also made, when necessary, to address data disclosure concerns.

DID040: How old when a doctor first told you that you had diabetes?
All responses of age 80 years and older are coded as ‘80’, to be consistent with the coding for the participant age variable in the demographics file. Also, the onset of diabetes at age less than 1 year was coded as 666.

DID060: For how long have you been taking insulin?
Taking insulin less than 1 month was coded as 666.

DID250: How many times have you seen doctor in the past 12 months?
The value was coded as 0 for participants who reported “None”.

DID260: How often do you check your blood for glucose or sugar?
This variable was coded as 0 and 666 for participants who reported “Never” and “Unable to do activity (blind)” respectively.

DID341: During the past 12 months, how many times has a doctor checked your feet for any sores or irritations?
The value was coded as 0 for participants who reported “None”.

DID350: How often do you check your feet for sores or irritation?
The value was coded as 0 for participants who reported “None”.

Analytic Notes

In the 2009–2010 data, the core questions for the diabetes component, including doctor diagnosed diabetes, duration of diabetes, insulin use, oral diabetic medication, and diabetic retinopathy are similar to the 2005–2008 and 1999–2004 publicly release data. The remaining questions, including awareness of risk factors for diabetes, and medical or personal cares associated with diabetes are similar to the 2005–2008 publicly release data. However, questions about healthy lifestyle changes to lower the risk for certain diseases, self-reported “A one C” levels, blood pressure readings, and LDL cholesterol numbers are not collected in the 2009-2010 survey.

When combining DIQ data from different survey cycles, please note that there is a possible name change for the same question across release cycles due to the ways of data process and editing. The following cross reference table shows these variable names through the 2009-2010 data.

Variable names across cycles
Label 1999–2004 2005–2008 2009–2010
Age when first told you had diabetes DIQ040G DID040 DID040
Number of years of age DIQ040Q
How long taking insulin DIQ060G DID060 DID060
Number of mos/yrs taking insulin DIQ060Q
Take diabetic pills to lower blood sugar DIQ070 DID070 DIQ070
Past year times Dr check feet for sore DID340 DID341

The analysis of NHANES 2009–2010 diabetes questionnaire data must be conducted using the appropriate survey design variables, sample weights, and the basic demographic variables. Interview weights should only be used if questionnaire data are analyzed by themselves. However if DIQ data are merged with the MEC examination data or laboratory data, the MEC examination weights should be used for analyses. If DIQ data are merged with laboratory sub-sample data, sub-sample weights should be used for analyses.

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.

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

DIQ010 - Doctor told you have diabetes

Variable Name:
DIQ010
SAS Label:
Doctor told you have diabetes
English Text:
The next questions are about specific medical conditions. {Other than during pregnancy, {have you/has SP}/{Have you/Has SP}} ever been told by a doctor or health professional that {you have/{he/she/SP} has} diabetes or sugar diabetes?
English Instructions:
CAPI INSTRUCTION: IF SP AGE < 15, DISPLAY "HAVE SP" FOR THE FIRST DISPLAY AND "SP HAS" FOR THE SECOND DISPLAY. IF SP IS FEMALE AND AGE >= 20, DISPLAY "OTHER THAN DURING PREGNANCY, {HAVE YOU/HAS SP}".
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 739 739
2 No 9230 9969 DIQ159
3 Borderline 134 10103 DIQ159
7 Refused 1 10104 DIQ159
9 Don't know 5 10109 DIQ159
. Missing 0 10109

DID040 - Age when first told you had diabetes

Variable Name:
DID040
SAS Label:
Age when first told you had diabetes
English Text:
How old {was SP/were you} when a doctor or other health professional first told {you/him/her} that {you/he/she} had diabetes or sugar diabetes?
English Instructions:
ENTER AGE IN YEARS.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 to 79 Range of Values 725 725
80 80 years or older 11 736
666 Less than 1 year 0 736
777 Refused 0 736
999 Don't know 3 739
. Missing 9370 10109

DIQ159 - CHECK ITEM

Variable Name:
DIQ159
English Instructions:
English Instructions: BOX 4. CHECK ITEM DIQ.159: IF AGE <12 OR DIQ.010 = 1 (YES), GO TO DIQ.050. IF AGE >=12 AND DIQ.010 = 3, GO TO DIQ.170. OTHERWISE, CONTINUE.
Target:
Both males and females 1 YEARS - 150 YEARS

DIQ160 - Ever told you have prediabetes

Variable Name:
DIQ160
SAS Label:
Ever told you have prediabetes
English Text:
{Have you/Has SP} ever been told by a doctor or other health professional that {you have/SP has} any of the following: prediabetes, impaired fasting glucose, impaired glucose tolerance, borderline diabetes or that {your/her/his} blood sugar is higher than normal but not high enough to be called diabetes or sugar diabetes?
English Instructions:
CAPI INSTRUCTION: HELP SCREEN: PREDIABETES, IMPAIRED FASTING GLUCOSE, IMPAIRED GLUCOSE TOLERANCE, OR BORDERLINE DIABETES OCCURS WHEN BLOOD SUGAR (GLUCOSE) LEVELS ARE HIGHER THAN NORMAL BUT NOT HIGH ENOUGH TO BE DIABETES. HAND CARD DIQ1.
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 262 262
2 No 6420 6682
7 Refused 0 6682
9 Don't know 10 6692
. Missing 3417 10109

DIQ170 - Ever told have health risk for diabetes

Variable Name:
DIQ170
SAS Label:
Ever told have health risk for diabetes
English Text:
{Have you/Has SP} ever been told by a doctor or other health professional that {you have/s/he has} health conditions or a medical or family history that increases {your/his/her} risk for diabetes?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 738 738
2 No 6056 6794
7 Refused 0 6794
9 Don't know 28 6822
. Missing 3287 10109

DIQ180 - Had blood tested past three years

Variable Name:
DIQ180
SAS Label:
Had blood tested past three years
English Text:
{Have you/Has SP} had a blood test for high blood sugar or diabetes within the past three years?
English Instructions:
INTERVIEWER INSTRUCTION: DO NOT INCLUDE URINE TESTS.
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 2794 2794
2 No 3805 6599
7 Refused 1 6600
9 Don't know 222 6822
. Missing 3287 10109

DIQ050 - Taking insulin now

Variable Name:
DIQ050
SAS Label:
Taking insulin now
English Text:
{Is SP/Are you} now taking insulin
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 218 218
2 No 9890 10108 DIQ065
7 Refused 1 10109 DIQ065
9 Don't know 0 10109 DIQ065
. Missing 0 10109

DID060 - How long taking insulin

Variable Name:
DID060
SAS Label:
How long taking insulin
English Text:
For how long {have you/has SP} been taking insulin?
English Instructions:
ENTER NUMBER (OF MONTHS OR YEARS).
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 40 Range of Values 213 213
666 Less than 1 month 4 217
777 Refused 0 217
999 Don't know 1 218
. Missing 9891 10109

DIQ060U - Unit of measure (month/year)

Variable Name:
DIQ060U
SAS Label:
Unit of measure (month/year)
English Text:
UNIT OF MEASURE
English Instructions:
ENTER UNIT.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Months 30 30
2 Years 183 213
7 Refused 0 213
9 Don't know 0 213
. Missing 9896 10109

DIQ065 - CHECK ITEM

Variable Name:
DIQ065
English Instructions:
BOX 0. CHECK ITEM DIQ.065: IF DIQ.010 = 1 (YES) OR DIQ.010 = 3 (BORDERLINE OR PREDIABETES) OR DIQ.160 = 1 (YES) CONTINUE. OTHERWISE, GO TO END OF SECTION.
Target:
Both males and females 1 YEARS - 150 YEARS

DIQ070 - Take diabetic pills to lower blood sugar

Variable Name:
DIQ070
SAS Label:
Take diabetic pills to lower blood sugar
English Text:
{Is SP/Are you} now taking diabetic pills to lower {{his/her}/your} blood sugar? These are sometimes called oral agents or oral hypoglycemic agents.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 588 588
2 No 545 1133
7 Refused 0 1133
9 Don't know 2 1135
. Missing 8974 10109

DIQ229 - CHECK ITEM

Variable Name:
DIQ229
English Instructions:
BOX 8. CHECK ITEM DIQ.229: IF DIQ.010 = 3 (BORDERLINE OR PREDIABETES) OR DIQ.160 = 1 (YES), GO TO END OF SECTION. OTHERWISE, CONTINUE.
Target:
Both males and females 1 YEARS - 150 YEARS

DIQ230 - How long ago saw a diabetes specialist

Variable Name:
DIQ230
SAS Label:
How long ago saw a diabetes specialist
English Text:
When was the last time {you/SP} saw a diabetes nurse educator or dietitian or nutritionist for {your/his/her} diabetes? Do not include doctors or other health professionals.
English Instructions:
INTERVIEWER INSTRUCTION: IF RESPONDENT ANSWERS "TODAY" OR A PERIOD LESS THAN A MONTH, CODE 1 - THE 0-12 MONTH CATEGORY.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 1 year ago or less 319 319
2 More than 1 year ago but no more than 2 years ago 53 372
3 More than 2 years ago but no more than 5 years ago 71 443
4 More than 5 years ago 68 511
5 Never 227 738
7 Refused 0 738
9 Don't know 1 739
. Missing 9370 10109

DIQ240 - Is there one Dr you see for diabetes

Variable Name:
DIQ240
SAS Label:
Is there one Dr you see for diabetes
English Text:
Is there one doctor or other health professional {you usually see/SP usually sees} for {your/his/her} diabetes? Do not include specialists to whom {you have/SP has} been referred such as diabetes educators, dieticians or foot and eye doctors.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 584 584
2 No 155 739 DID260
7 Refused 0 739 DID260
9 Don't know 0 739 DID260
. Missing 9370 10109

DID250 - Past year how many times seen doctor

Variable Name:
DID250
SAS Label:
Past year how many times seen doctor
English Text:
How many times {have you/has SP} seen this doctor or other health professional in the past 12 months?
English Instructions:
ENTER NUMBER OF TIMES.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 150 Range of Values 574 574
0 None 10 584
7777 Refused 0 584
9999 Don't know 0 584
. Missing 9525 10109

DID260 - How often check blood for glucose/sugar

Variable Name:
DID260
SAS Label:
How often check blood for glucose/sugar
English Text:
How often {do you check your/does SP check his/her} blood for glucose or sugar? Include times when checked by a family member or friend, but do not include times when checked by a doctor or other health professional.
English Instructions:
INTERVIEW INSTRUCTION: DO NOT INCLUDE URINE TESTS. CAPI INSTRUCTION: SOFT EDIT 7 OR MORE PER DAY, 30 OR MORE PER WEEK. ENTER NUMBER OF TIMES.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 15 Range of Values 601 601
0 Never 131 732
666 Unable to do activity (blind) 7 739
777 Refused 0 739
999 Don't know 0 739
. Missing 9370 10109

DIQ260U - Unit of measure (day/week/month/year)

Variable Name:
DIQ260U
SAS Label:
Unit of measure (day/week/month/year)
English Text:
How often {do you check your/does SP check his/her} blood for glucose or sugar? Include times when checked by a family member or friend, but do not include times when checked by a doctor or other health professional.
English Instructions:
ENTER UNIT.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Per day 398 398
2 Per week 130 528
3 Per month 44 572
4 Per year 29 601
7 Refused 0 601
9 Don't know 0 601
. Missing 9508 10109

DIQ295 - CHECK ITEM

Variable Name:
DIQ295
English Instructions:
BOX 10A. CHECK ITEM DIQ.295: IF AGE <12, GO TO END OF SECTION. OTHERWISE, CONTINUE.
Target:
Both males and females 1 YEARS - 150 YEARS

DID341 - Past year times Dr check feet for sores

Variable Name:
DID341
SAS Label:
Past year times Dr check feet for sores
English Text:
During the past 12 months, about how many times has a doctor or other health professional checked {your/SP's} feet for any sores or irritations?
English Instructions:
ENTER NUMBER OF TIMES.
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 96 Range of Values 524 524
0 None 202 726
7777 Refused 0 726
9999 Don't know/not sure 4 730
. Missing 9379 10109

DID350 - How often do you check your feet

Variable Name:
DID350
SAS Label:
How often do you check your feet
English Text:
How often {do you check your feet/does SP check (his/her) feet} for sores or irritations? Include times when checked by a family member or friend, but do not include times when checked by a doctor or other health professional.
English Instructions:
ENTER NUMBER OF TIMES.
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 52 Range of Values 578 578
0 None 151 729
7777 Refused 0 729
9999 Don't know 1 730
. Missing 9379 10109

DIQ350U - Unit of measure (day/week/month/year)

Variable Name:
DIQ350U
SAS Label:
Unit of measure (day/week/month/year)
English Text:
How often {do you check your feet/does SP check (his/her) feet} for sores or irritations? Include times when checked by a family member or friend, but do not include times when checked by a doctor or other health professional.
English Instructions:
ENTER UNIT.
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Per day 408 408
2 Per week 125 533
3 Per month 34 567
4 Per year 11 578
7 Refused 0 578
9 Don't know 0 578
. Missing 9531 10109

DIQ360 - Last time had pupils dilated for exam

Variable Name:
DIQ360
SAS Label:
Last time had pupils dilated for exam
English Text:
When was the last time {you/SP} had an eye exam in which the pupils were dilated? This would have made {you/SP} temporarily sensitive to bright light.
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Less than 1 month 94 94
2 1-12 months 384 478
3 13-24 months 86 564
4 Greater than 2 years 99 663
5 Never 66 729
7 Refused 0 729
9 Don't know 5 734
. Missing 9375 10109

DIQ080 - Diabetes affected eyes/had retinopathy

Variable Name:
DIQ080
SAS Label:
Diabetes affected eyes/had retinopathy
English Text:
Has a doctor ever told {you/SP} that diabetes has affected {your/his/her} eyes or that {you/s/he} had retinopathy (ret-in-op-ath-ee)?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 133 133
2 No 594 727
7 Refused 0 727
9 Don't know 7 734
. Missing 9375 10109