Coding Documentation
The base year for variables was 2017. Post and prior years were
recoded to match the variables in this year. Changes are noted on each
tab.
CHCCOPD3=CHCOPD2 HAVARTH5=HAVARTH$:(Ever told) you have some form of
arthritis, rheumatoid arthritis, gout, lupus, or fibromyalgia?
(Arthritis diagnoses include: rheumatism, polymyalgia rheumatica;
osteoarthritis (not osteporosis); tendonitis, bursitis, bunion, tennis
elbow; carpal tunnel syndrome, tarsal tunnel syndrome; joint infection,
etc.) INCOME3=INCOME2
No apparent changes.
In 2019, CHCKNDY was CHCKNDY2; SEX was SEXVAR, CHCOPD1 was CHCCOPD2,
HAVARTH3 was HAVARTH4, and DIABETE3 was DIABETE4.
CHCKDNY2: Not including kidney stones, bladder infection or
incontinence, were you ever told you have kidney disease? 1=Y, 2=N,
7=Don’t Know /Not Sure, 9=Refused, BLANK=Not Asked or Missing CHCKDNY1:
(Ever told) you have kidney disease? Do NOT include kidney stones,
bladder infection or incontinence. (Incontinence is not being able to
control urine flow.) 1=Y, 2=N, 7=Don’t Know /Not Sure, 9=Refused,
BLANK=Not Asked or Missing. These response options were identical.
SEXVAR: Sex of Respondent, 1=Male, 2=Female (No Refused Category)
SEX: Indicate Sex of Respondent, 1=Male, 2=Female, 9=Refused Sex was
modeled as either known to be male or not known to be male (meaning that
the 7’s and 9’s were assumed female, the modal response value)
CHCOPD2:(Ever told) (you had) chronic obstructive pulmonary disease,
C.O.P.D.,emphysema or chronic bronchitis? CHCOPD1:(Ever told) you have
chronic obstructive pulmonary disease, C.O.P.D., emphysema or chronic
bronchitis? Identical with same responses. This applied to HAVARTH3 and
4 as well as DIABETE3 and 4.
DIABETE4: (Ever told) (you had) diabetes? (If ´Yes´ and respondent is
female, ask ´Was this only when you were pregnant?´. If Respondent says
pre-diabetes or borderline diabetes, use response code 4.) DIABETE3:
(Ever told) you have diabetes (If ´Yes´ and respondent is female, ask
´Was this only when you were pregnant?´. If Respondent says pre-diabetes
or borderline diabetes, use response code 4.)
HAVARTH4:(Ever told) you have some form of arthritis, rheumatoid
arthritis, gout, lupus, or fibromyalgia? (Arthritis diagnoses include:
rheumatism, polymyalgia rheumatica; osteoarthritis (not osteporosis);
tendonitis, bursitis, bunion, tennis elbow; carpal tunnel syndrome,
tarsal tunnel syndrome; joint infection, etc.) HAVARTH3: (Ever told) you
have some form of arthritis, rheumatoid arthritis, gout, lupus, or
fibromyalgia? (Arthritis diagnoses include: rheumatism, polymyalgia
rheumatica; osteoarthritis (not osteporosis); tendonitis, bursitis,
bunion, tennis elbow; carpal tunnel syndrome, tarsal tunnel syndrome;
joint infection, etc.)
In 2018, there were only two changes from the base year: CHCKDNY
became CHCKDNY1, SEX became SEX1. CHCKDNY1: (Ever told) you have kidney
disease? (Do NOT include kidney stones, bladder infection or
incontinence.) CHCKDNY: (Ever told) you have kidney disease? Do NOT
include kidney stones, bladder infection or incontinence.(Incontinence
is not being able to control urine flow.) The response options were
identical (1=Y, 2=N, 7=Don’t Know /Not Sure, 9=Refused, BLANK=Not Asked
or Missing). These variables were treated as identical.
SEX1: What is your sex? or What was your sex at birth? Was it…,
1=Male, 2=Female, 7=Don’t Know/Not Sure, 9=Refused SEX: Indicate Sex of
Respondent, 1=Male, 2=Female, 9=Refused Sex was modeled as either known
to be male or not known to be male (meaning that the 7’s and 9’s were
assumed female, the modal response value)
This year was the base year for all variables.
In 2016, the imputed race variables was named .RACE.
.RACE=Race/ethnicity categories Responses: 1. White Non-Hispanic, 2.
Black Non-Hispanic, 3. American Indian / Native Alaskan Non-Hispanic, 4.
Asian Non-Hispanic, 5. Native Hawaiian / PI, 6. Other Race Non-Hispanic,
7. Multiracial Non-Hispanic, 8. Hispanic, 9. Don’t Know / Not Sure /
Refused
.IMPRACE=Imputed race/ethnicity value Responses: 1. White
Non-Hispanic, 2. Black Non-Hispanic, 3. Asian Non-Hispanic, 4. American
Indian / Native Alaskan Non-Hispanic, 5.Hispanic, 6. Other Race
Non-Hispanic
To address this, we zero out 5’s and then assign 8’s to 5’s as we are
only interested in White vs. Non-White, and Hispanics
vs. Non-Hispanic.
In 2015, the imputed race variable was named .RACE.
In 2013, the imputed race variable was named .RACE.
In 2012, the imputed race variable was named .RACE2. The coding was
similar but switched from RACE.
.RACE=Race/ethnicity categories Responses: 1. White Non-Hispanic, 2.
Black Non-Hispanic, 3. Asian Only Non-Hispanic, 4. Native Hawaiian / PI,
5. American Indian or Alaskan Native Non-Hispanic, 6. Other Race
Non-Hispanic, 7. Multiracial Hispanic, 8. Hispanic, 9. Don’t know/Not
sure/Refused
Versus…
.IMPRACE=Imputed race/ethnicity value Responses: 1. White
Non-Hispanic, 2. Black Non-Hispanic, 3. Asian Non-Hispanic, 4. American
Indian / Native Alaskan Non-Hispanic, 5.Hispanic, 6. Other Race
Non-Hispanic
Further the employment variable was EMPLOY rather than EMPLOY1.
.EMPLOY Values: 1. Employed for Wages, 2. Self-Employed, 3. Out of
work for > 1 year, 4. Out of work < 1 year, 5. A Homemaker, 6. A
Student, 7. Retired, 8. Unable to Work, 9. Refused, BLANK Not Asked or
Missing
EMPLOY1: Are you currently…? Values: 1=Employed for Wages, 2=
Self-Employed, 3=Out of work >1 year, 4=Out of Work< 1 year, 5=A
homemaker, 6= A student, 7=Retire, 8=Unable to Work, 9=Refused,
BLANK=Not Asked/Missing
In 2011, the imputed race variable was named .RACE2. The employment
variable was EMPLOY rather than EMPLOY1 and measured as stated above.
The COPD variable was CHCCOPD rather than CHCCOPD1 and measured
identically.
In 2010, the race, employment and COPD changes were measured
identically. Note: CDC recommends against combining (joint analysis) any
years before 2010 due to the addition of cellular and raking methodology
in 2011. However, these are the best estimates for the population, so
treating the years independently when combined solves this issue.
On top of these changes, SEX was SEXG with 1=Male and 2=Female. The
recoding in the base works. VETERAN3 was VETERAN2.
VETERAN2: Have you ever served on active duty in the United States
Armed Forces, either in the regular military or in a National Guard or
military reserve unit? Active duty does not include training for the
Reserves or National Guard, but DOES include activation, for example,
for the Persian Gulf War. Values: 1=Yes Now on Active Duty, 2=Yes On
Active Duty In the Past But Not the Last 12 Months, 3=Yes, on active
duty in the past, but not during the last 12 months, 4=No, training for
Reserves or National Guard only, 5=No, never served in the military,
7=Don’t know/Not Sure, 9=Refused, BLANK=Not Asked / Missing
Versus
VETERAN3: Have you ever served on active duty in the United States
Armed Forces, either in the regular military or in a National Guard or
military reserve unit? Values: 1=Yes, 2=No, 7=Don’t Know/Not Sure,
9=Refused, BLANK=Not Asked/Missing
To address this, we recoded 1-3 for VETERAN2 as 1 and all other
values as 0.
HAVARTH2 preceeded HAVARTH3. The responses were identical
HAVARTH2:Have you ever been told by a doctor or other health
professional that you have some form of arthritis, rheumatoid arthritis,
gout, lupus, or fibromyalgia?(Arthritis diagnoses include: rheumatism,
polymyalgia rheumatica; osteoarthritis (not osteporosis); tendonitis,
bursitis, bunion, tennis elbow; carpal tunnel syndrome, tarsal tunnel
syndrome; joint infection, etc.) Values: 1=Yes, 2=No, 7=Don’t Know/Not
Sure, 9=Refused, BLANK=Not Asked/Missing
HAVARTH3:(Ever told) you have some form of arthritis, rheumatoid
arthritis, gout, lupus, or fibromyalgia? (Arthritis diagnoses include:
rheumatism, polymyalgia rheumatica; osteoarthritis (not osteporosis);
tendonitis, bursitis, bunion, tennis elbow; carpal tunnel syndrome,
tarsal tunnel syndrome; joint infection, etc.) Values: 1=Yes, 2=No,
7=Don’t Know/Not Sure, 9=Refused, BLANK=Not Asked/Missing
CHCSNCR,Skin Cancer, was derivable using CNCRTYPE, a follow-on to
whether an individual was told they had cancer (CNCRHAVE). What type of
cancer was it? 20 and 21 were “Melanoma” and “Other Skin Cancer.”
Similarly, Other Cancer (CHCOCNCR) were derivable from CNCRHAVE by
eliminating 20 and 21 (skin cancers).
COPD was not available. Kidney Disease was not available.
DIABETE2 preceded DIABETE3. Responses were identical.
DIABETE2: Have you ever been told by a doctor that you have diabetes
(If “Yes” and respondent is female, ask “Was this only when you were
pregnant?”. Values: 1=Yes, 2=Yes, Gestational Only, 3=No, 4=No,
Pre-Diabetes, =Don’t Know/Not Sure, 9=Refused, BLANK=Not Asked/Missing
Recode: 0=Not Yes, 1=Yes
DIABETE3: (Ever told) you have diabetes (If ´Yes´ and respondent is
female, ask ´Was this only when you were pregnant?´ Values: 1=Yes,
2=Yes, Gestational Only, 3=No, 4=No, Pre-Diabetes, =Don’t Know/Not Sure,
9=Refused, BLANK=Not Asked/Missing Recode: 0=Not Yes, 1=Yes
2010 did not use raking for weights, so they are less reliable in
terms of estimating the population. Thus the weighting variables were
different. The stratum weights remained the same, but the individual
weight variable was different.
Year 2009 was identical to Year 2010 in terms of variables for this
study.
In 2008, no questions existed about arthritis, skin cancer, other
cancers, COPD, or kidney disease.
VETERAN was used instead of VETERAN2. The measurement and question was
identical.
VETERAN: Have you ever served on active duty in the United States
Armed Forces, either in the regular military or in a National Guard or
military reserve unit? Active duty does not include training for the
Reserves or National Guard, but DOES include activation, for example,
for the Persian Gulf War. VETERAN2: Have you ever served on active duty
in the United States Armed Forces, either in the regular military or in
a National Guard or military reserve unit? Active duty does not include
training for the Reserves or National Guard, but DOES include
activation, for example, for the Persian Gulf War.
Both responses were the same.
Aside from these changes, there were no other differences from
2008.
- Year 2007 * In 2007, no questions existed about skin cancer, other
cancers, COPD, or kidney disease.
VETERAN wasn’t used. Instead, VETERAN1 was. These responses were
identical to VETERAN3. What was old was made new again.
VETERAN1: Have you ever served on active duty in the United States
Armed Forces, either in the regular military or in a National Guard or
military reserve unit? Active duty does not include training for the
Reserves or National Guard, but DOES include activation, for example,
for the Persian Gulf War. Values: 1=Yes, 2=No, 7=Don’t Know/Not Sure,
9=Refused, Blank=Not Asked/Missing
Additionally, HAVARTH2 was in this set, but this measure was measured
differently from HAVARTH3.
HAVARTH2: During the past 30 days, have you had symptoms of pain,
aching, or stiffness in or around a joint? Values: 1=Yes, 2=No, 7=Don’t
know/Not sure, 9=Refused HAVARTH3:(Ever told) you have some form of
arthritis, rheumatoid arthritis, gout, lupus, or fibromyalgia?
(Arthritis diagnoses include: rheumatism, polymyalgia rheumatica;
osteoarthritis (not osteporosis); tendonitis, bursitis, bunion, tennis
elbow; carpal tunnel syndrome, tarsal tunnel syndrome; joint infection,
etc.) Values: 1=Yes, 2=No, 7=Don’t Know/Not Sure, 9=Refused, BLANK=Not
Asked/Missing
These variables were different and could not be compared alike.
Other variable naming changes existed, but there were no differences
in the questions.
Another change..
CVDCRHD3/ CVDINFR3: Has a doctor, nurse, or other health professional
ever told you that you had any of the following? For each, tell me
“Yes”, “No”, or you’re “Not sure”: (Ever told) you had angina or
coronary heart disease?
Values: 1=Yes, 2=No, 7=Don’t Know/Not Sure, 9=Refused, BLANK=Not
Asked/Missing
versus
CVDCRHD4: (Ever told) you had angina or coronary heart disease?
Values: 1=Yes, 2=No, 7=Don’t Know/Not Sure, 9=Refused, BLANK=Not
Asked/Missing
2005 looks like 2006 for the variables in question.
In 2004, no questions existed about skin cancer, other cancers, COPD,
or kidney disease. A module about heart disease contained insufficient
usable responses (256,507 blanks versus 303,822 total). Stroke was still
present, but also largely unused (256,513 blanks).
In 2003, there was not a 6-group age variable but rather a 13 group.
This was easy to collapse by recoding. No questions existed about skin
cancer, other cancers, COPD, or kidney disease. DIABETES was the
precursor to DIABETE2 and excluded only the pre-diabetes response.
RFBMI3 was the precursor to RFBMI4 and was 1) Not at risk (_BMI3 <
2500) and 2) At Risk (2500 <= _BMI3 < 9999). This was identical to
the results from RFBMI4 when recoded
