-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased

Sex (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = Male
1 = Female

Ethnicity (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = NOT Hispanic or Latino
1 = Hispanic or Latino

Race (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
1 = Black
2 = White
3 = Asian
4 = American Indian/Alaskan Native
5 = Mixed Race

Marital status (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = Never married, but in a relationship
1 = Married
2 = Remarried
3 = Living together as married
4 = Separated
5 = Divorced
6 = Widowed

Living with partner (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = No
1 = Yes

Unemployment status (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = N/A
1 = Homemaker
2 = Volunteer
3 = Unemployed
4 = Unable to work
5 = Disability

Student status (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = Non-student
1 = Part-time student
2 = Full-time student

Working status (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = Unemployed
1 = Part-time employed
2 = Full-time employed

Years of school (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
1 = Graduate or professional training
2 = College graduate
3 = Some college
4 = High school graduate or less

Annual household income (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = Less than $5000
1 = $5000 - $9999
2 = $10000 - $14999
3 = $15000 - $19999
4 = $20000 - $24999
5 = $25000 - $29999
6 = $30000 - $34999
7 = $35000 - $39999
8 = $40000 - $49999
9 = $50000 - $59999
10 = $60000 - $74999
11 = $75000 - $99999
12 = $100000 and above

Sexual attraction (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
1 = Only attracted to females
2 = Mostly attracted to females
3 = Equally attracted to females and males
4 = Mostly attracted to males
5 = Only attracted to males

Sexual identity (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
1 = Heterosexual or straight
2 = Gay or lesbian
3 = Bisexual

Circulatory disorders (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
0 = Does NOT have health condition
1 = Participant has health condtion

Physical health interference (BIQ, intake, participant)
-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
1 = Not at all or rarely
2 = Some of the time
3 = About half of the time
4 = Most of the time

-9999 = Missing
-8888 = Question not asked
-7777 = Form updated during study, question not on new form
-6666 = Participant failed to complete
-3333 = Not applicable, nested question
-2222 = Question not applicable
-1111 = Participant deceased
1 = Excellent
2 = Very good
3 = Good
4 = Fair
5 = Poor