Table S1: Comparison of questionnaire wording across NHBS cycles 2008-2013
AGE:
2008 MSM2 & 2009 IDU2 SURVEYS
What is your date of birth?
2011 MSM3 & 2012 IDU3 SURVEYS
What is your date of birth?
RACE:
2008 MSM2 & 2009 IDU2 SURVEYS
Do you consider yourself to be Hispanic or Latino/a?
Which racial group or groups do you consider yourself to be in? You may choose more than one option.
American Indian or Alaska Native
Asian
Black or African American
Native Hawaiian or Other Pacific Islander
White
2011 MSM3 & 2012 IDU3 SURVEYS
Do you consider yourself to be Hispanic or Latino/a?
Which racial group or groups do you consider yourself to be in? You may choose more than one option.
American Indian or Alaska Native
Asian
Black or African American
Native Hawaiian or Other Pacific Islander
White
SEX
2008 MSM2 & 2009 IDU2 SURVEYS
What was your sex at birth?
Male
Female
Intersex/ambiguous
2011 MSM3 & 2012 IDU3 SURVEYS
What was your sex at birth?
Male
Female
Intersex/ambiguous
AREA OF RESIDENCE
2008 MSM2 & 2009 IDU2 SURVEYS
What zip code do you live in?
2011 MSM3 & 2012 IDU3 SURVEYS
What zip code do you live in?
HOMELESS
2008 MSM2 & 2009 IDU2 SURVEYS
In the past 12 months, have you been homeless at any time? By homeless, I mean you were living on the street, in a shelter, a Single Room Occupancy hotel (SRO), temporarily staying with friends or relatives, or living in a car?
2011 MSM3 & 2012 IDU3 SURVEYS
Are you currently homeless?
EDUCATION
2008 MSM2 & 2009 IDU2 SURVEYS
What is the highest level of education you completed?
2011 MSM3 & 2012 IDU3 SURVEYS
What is the highest level of education you completed?
INCARCERATION
2008 MSM2 & 2009 IDU2 SURVEYS
In the past 12 months, have you been arrested by the police and booked?
2011 MSM3 & 2012 IDU3& 2013 HET3 SURVEYS
Have you ever been held in a detention center, jail or prison for more than 24 hours?
During the past 12 months, that is since <interview month> of last year have you been held in a detention center, jail, or prison, for more than 24 hours?
DRUG MOST FREQUENTLY INJECTED
2008 MSM2 & 2009 IDU2 SURVEYS
Which drug do you inject most often?
2011 MSM3 & 2012 IDU3 SURVEYS
Which drug do you inject most often?
AGE AT FIRST INJECTION
2008 MSM2 & 2009 IDU2 SURVEYS
Think back to the very first time you injected any drugs, other than those prescribed for you. How old were you when you first injected any drug?
2011 MSM3 & 2012 IDU3 SURVEYS
Think back to the first time you injected any drugs, other than those prescribed for you. How old were you when you first injected any drug?
INJECTION FREQUENCY
2008 MSM2 & 2009 IDU2 SURVEYS
(In MSM cycle): How often did you inject: ….heroin and cocaine together…heroin… etc.
(In IDU cycle; asked as a local question supplementing the core questionnaire): During the past 12 months, on average, how often did you inject?
2011 MSM3 & 2012 IDU3 SURVEYS
In the past 12 months, on average, how often did you inject?
SHARED SYRINGE
2008 MSM2 & 2009 IDU2 SURVEYS
In the past 12 months when you injected, how often did you use a new, sterile needle? By a new, sterile needle, I mean a needle never used before by anyone, even you.
In the past 12 months, how often did you use needles that someone else had already injected with?
In the past 12 months, with how many people did you use a needle after they injected with it?
2011 MSM3 & 2012 IDU3 SURVEYS
In the past 12 months when you injected, how often did you use a new, sterile needle? By a new, sterile needle, I mean a needle never used before by anyone, even you.
In the past 12 months, with how many people did you use a needle after they injected with it?
In the past 12 months, how often did you use needles that someone else had already injected with?
SHARED COOKER
2008 MSM2 & 2009 IDU2 SURVEYS
In the past 12 months, with how many people did you use drugs that had been divided with a syringe that they had already used?
In the past 12 months when you injected, how often did you use a cooker that someone else had already used?
2011 MSM3 & 2012 IDU3 SURVEYS
In the past 12 months, with how many people did you use drugs that had been divided with a syringe that they had already used?
In the past 12 months when you injected, how often did you use a cooker that someone else had already used?
BACKLOADED
2008 MSM2 & 2009 IDU2 SURVEYS
In the past 12 months, with how many people did you use drugs that had been divided with a syringe that they had already used?
In the past 12 months when you injected, how often did you use drugs that had been divided with a syringe that someone else had already injected with?
2011 MSM3 & 2012 IDU3 SURVEYS
In the past 12 months, with how many people did you use drugs that had been divided with a syringe that they had already used?
In the past 12 months when you injected, how often did you use drugs that had been divided with a syringe that someone else had already injected with?
MALE-TO-MALE SEX
2008 MSM2 & 2009 IDU2 SURVEYS
Have you ever had oral or anal sex with a man?
In the past 12 months, with how many different men have you had oral or anal sex?
2011 MSM3 & 2012 IDU3 SURVEYS
Have you ever had oral or anal sex with a man?
In the past 12 months, that is, since <interview month> of last year, with how many different men have you had oral or anal sex?
NUMBER SEX PARTNERS
2008 MSM2 & 2009 IDU2 SURVEYS
Have you ever had oral or anal sex with a man?
Have you ever had vaginal or anal sex with a woman?
In the past 12 months, with how many different women have you had oral, vaginal, or anal sex?
In the past 12 months, with how many different men have you had oral or anal sex?
2011 MSM3 & 2012 IDU3 SURVEYS
Have you ever had oral or anal sex with a man?
Have you ever had vaginal or anal sex with a woman?
In the past 12 months, that is, since <interview month> of last year, with how many different women have you had oral, vaginal, or anal sex?
In the past 12 months, that is, since <interview month> of last year, with how many different men have you had oral or anal sex?
STD
2008 MSM2 & 2009 IDU2 SURVEYS
In the past 12 months, has a doctor, nurse, or other health care provider told you that you had any of the following STDs:…. gonorrhea….chlamydia…..syphilis?
2011 MSM3 & 2012 IDU3 SURVEYS
In the past 12 months, has a doctor or other health care provider told you that you had….gonorrhea….chlamydia…..syphilis?
EXCHANGE SEX
2008 MSM2 & 2009 IDU2 SURVEYS
In the past 12 months, with how many different women have you had oral, vaginal, or anal sex?
“…..by "exchange partner" I mean a woman you have sex with in exchange for things like money or drugs.”
Of the _____ [insert number from Q13] women you’ve had oral, vaginal, or anal sex with in the past 12 months, … How many were exchange partners?
Analogous questions were asked across male-to-female, male-to-male, and female-to-male partnerships.
2011 MSM3 & 2012 IDU3 SURVEYS
In the past 12 months, that is, since <interview month> of last year, with how many different women have you had oral, vaginal, or anal sex?
Of the _____ [insert number from SX-3] women you’ve had oral, vaginal, or anal sex with in the past 12 months, how many of them were main partners?
Of your ______[insert number from SX-4] female main partners in the past 12 months, how many did you give things like money or drugs in exchange for sex?
How many were casual partners?
Of your ______[insert number from SX-4] female main partners in the past 12 months, how many gave you things like money or drugs in exchange for sex?
Analogous questions were asked for main and casual sex partners and across male-to-female, male-to-male, and female-to-male partnerships
UNPROTECTED, NON-CONCORDANT SEX AT LAST SEXUAL CONTACT
2008 MSM2 & 2009 IDU2 SURVEYS
Now I would like you to think about the last time you had sex with a woman. When was the
last time you had oral, vaginal, or anal sex with a woman? Just tell me the month and year.
When you had sex that last time, did you have vaginal sex?
During vaginal sex that last time, did you or your partner use a condom?
Did you or your partner use the condom the whole time?
When you had sex that last time, did you have anal sex?
During anal sex that last time, did you use a condom?
Did you use the condom the whole time?
The last time you had sex with this partner, did you know her HIV status?
What was her HIV status?
Analogous questions were asked for last partners in male-to-male and female-to-male sexual contact. Males were asked about both last male-to-female and last male-to-male partners.
The identity of the overall partner at last sexual contact was established by the response to questions of the form:
Now I would like you to think about the last time you had sex with a woman. When was the
last time you had oral, vaginal, or anal sex with a woman? Just tell me the month and year.
2011 MSM3 & 2012 IDU3 SURVEYS
Now I would like you to think about the last time you had sex with a woman. When was the last time you had oral, vaginal, or anal sex with a woman? Just tell me the month and year.
When you had sex that last time, did you have vaginal sex?
During vaginal sex that last time, did you or your partner use a condom?
Did you or your partner use the condom the whole time?
When you had sex that last time, did you have anal sex?
During anal sex that last time, did you use a condom?
Did you use the condom the whole time?
The last time you had sex with this partner, did you know her HIV status?
What was her HIV status?
Analogous questions were asked for females for female-to-male sexual contact.
Males were asked across male-to-female, male-to-male and female-male partnerships.
The identity of the overall partner at last sexual contact was established by the response to questions of the form:
Now I would like you to think about the last time you had sex with a woman. When was the
last time you had oral, vaginal, or anal sex with a woman? Just tell me the month and year.
TYPE OF PARTNER AT LAST SEXUAL CONTACT
2008 MSM2 & 2009 IDU2 SURVEYS
Now I would like you to think about the last time you had sex with a woman. When was the last time you had oral, vaginal, or anal sex with a woman? Just tell me the month and year.
Was the woman you had sex with that last time a main partner or a casual partner? Remember, a main sex partner is someone you feel committed to above anyone else. And a casual sex partner is someone you do not feel committed to or don’t know very well.
2011 MSM3 & 2012 IDU3 SURVEYS
Now I would like you to think about the last time you had sex with a woman. When was the
last time you had oral, vaginal, or anal sex with a woman? Just tell me the month and year.
Was the woman you had sex with that last time a main partner or a casual partner? Remember, a main sex partner is someone you feel committed to above anyone else. And a casual sex partner is someone you do not feel committed to or don’t know very well.
KNEW LAST PARTNER’S HIV STATUS?
2008 MSM2 & 2009 IDU2 SURVEYS
The last time you had sex with this partner, did you know her HIV status?
What was her HIV status?
Analogous questions were asked across male-to-female, male-to-male and female-to-male partnerships. The identity of the overall partner at last sexual contact was established by the response to questions of the form:
Now I would like you to think about the last time you had sex with a woman. When was the
last time you had oral, vaginal, or anal sex with a woman? Just tell me the month and year.
2011 MSM3 & 2012 IDU3 SURVEYS
The last time you had sex with this partner, did you know her HIV status?
What was her HIV status?
Analogous questions were asked for last partners in male-to-male and female-to-male sexual contact. The identity of the overall partner at last sexual contact was established by the response to questions of the form:
HIV TEST, 12 MONTHS
2008 MSM2 & 2009 IDU2 SURVEYS
When did you have your most recent HIV test?
2011 MSM3 & 2012 IDU3 SURVEYS
When did you have your most recent HIV test?
HIVTEST, 3 MONTHS
2008 MSM2 & 2009 IDU2 SURVEYS
When did you have your most recent HIV test?
2011 MSM3 & 2012 IDU3 SURVEYS
When did you have your most recent HIV test?
SELF-REPORTED HIV STATUS
2008 MSM2 & 2009 IDU2 SURVEYS
What was the result of your most recent HIV test?
2011 MSM3 & 2012 IDU3 SURVEYS
What was the result of your most recent HIV test?
ANTIRETROVIRALS
2008 MSM2 & 2009 IDU2 SURVEYS
Are you currently taking antiretroviral medicines to treat your HIV infection?
2011 MSM3 & 2012 IDU3 SURVEYS
Are you currently taking antiretroviral medicines to treat your HIV infection?