-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

Gender (BIQ, intake, significant other)
-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, significant other)
-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
99 = Missing

Race (BIQ, intake, significant other)
-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 = American Indian or Alaska Native
1 = Asian
2 = Black or African American
3 = Native Hawaiian or Other Pacific Islander
4 = White
5 = Mixed/More than 1 selected

Relationship with participant (BIQ, intake, significant other)
-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 = Spouse
2 = Long-term domestic partner
3 = Romantic partner living with participant less than 1 yr
4 = Romantic partner but not living together
5 = First-degree relative
6 = Other relative
7 = Friend
8 = Roommate (who lives with participant)
9 = Co-worker (who is named as a friend)

Relationship- if first degree relative (BIQ, intake, significant other)
-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 = Mother
2 = Father
3 = Sibling
4 = Child

Are you from this area-50 mi (BIQ, intake, significant other)
-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

How often do you have phone contact with the research participant (BIQ, intake, significant other)
-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 = Daily
2 = At least once a week
3 = At least once a month
4 = At least once a year
5 = Not at all

Hours per__ (BIQ, intake, significant other)
-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 = Day
2 = Week
3 = Month
4 = Year