The investigators study the behavioral consequences of Pre-exposure Prophylaxis or PrEP on sexual health behaviors, sexual health outcomes, and partner selection preferences. The study collects observational, self-reported data on PrEP status, PrEP taking-history, PrEP adherence over the last 30 days, STD diagnosis history dating back to January 2015 up to December 2019, sexual health behaviors (e.g., positioning, number of lifetime/recent partners, condom adherence etc.), and various demographic characteristics. The survey finishes with a conjoint experiment which asks respondents to select between two potential partners, and follow-up question about each profiles. Potential partners' characteristics include recreational drug use and condom adherence. Recruitment is conducted via running an ad on Facebook in New York, London, Toronto and Sydney for comparative purposes, as these metro areas have varying levels of PrEP use and accessibility.
See statistical analysis plan.
Study Type
OBSERVATIONAL
Enrollment
2,647
The investigators measure self-reported PrEP status as exposure, i.e., PrEP status is not confirmed via matched medical records or any other type of information directly collected form subjects.
New York University Abu Dhabi
Abu Dhabi, United Arab Emirates
Syphilis diagnosis
Self-reported diagnosis of syphilis
Time frame: All diagnosis data is collected in a time-stamped fashion between January 2015 and December 2019; diagnosis is reported within the year, but not in a specific month/day
Chlamydia diagnosis
Self-reported diagnosis of chlamydia
Time frame: All diagnosis data is collected in a time-stamped fashion between January 2015 and December 2019; diagnosis is reported within the year, but not in a specific month/day
Gonorrhea diagnosis
Self-reported diagnosis of gonorrhea
Time frame: All diagnosis data is collected in a time-stamped fashion between January 2015 and December 2019; diagnosis is reported within the year, but not in a specific month/day
Sexually transmitted diseases
Self-reported diagnosis of any STD
Time frame: All diagnosis data is collected in a time-stamped fashion between January 2015 and December 2019; diagnosis is reported within the year, but not in a specific month/day
Percent of time that condoms were used in sexual intercourse
Self-reported condom adherence
Time frame: 12 months
Number of ongoing sexual relationships
Self-reported number of concurrent sexual partners
Time frame: Through study completion, approximately 2 months
Number of sexual partners over the past 12 months
Self-reported number of sexual partners over the past 12 months
Time frame: 12 months
Selecting a potential date with many recent partners
The likelihood of selecting a potential date with 6 or more recent sexual partners in the conjoint experiment. Both AMCEs (average marginal component effects) and marginal means will be computed, see statistical analysis plan. As part of a conjoint experiment the investigators expose participants to a partner selection task. The attributes in the experiment and possible attribute values can be seen below: Race/ethnicity: White/Black/Asian Education: High school/Undergraduate degree/Graduate degree Number of sexual partners (past 3 months): 1/2-5 partners/6 or more Recreational drug use: Never/Sometimes/Often Seeking a...: Committed relationship/Casual relationship Use of condoms: Occasional/Frequent
Time frame: Through study completion, approximately 2 months
Selecting a potential date with frequent recreational drug use
The likelihood of selecting a potential date with frequent recreational drug use in the conjoint experiment. Both AMCEs (average marginal component effects) and marginal means will be computed, see statistical analysis plan. As part of a conjoint experiment the investigators expose participants to a partner selection task. The attributes in the experiment and possible attribute values can be seen below: Race/ethnicity: White/Black/Asian Education: High school/Undergraduate degree/Graduate degree Number of sexual partners (past 3 months): 1/2-5 partners/6 or more Recreational drug use: Never/Sometimes/Often Seeking a...: Committed relationship/Casual relationship Use of condoms: Occasional/Frequent
Time frame: Through study completion, approximately 2 months
Selecting a potential date with occasional condom adherence
The likelihood of selecting a potential date with occasional condom use in the conjoint experiment. Both AMCEs (average marginal component effects) and marginal means will be computed, see statistical analysis plan. As part of a conjoint experiment the investigators expose participants to a partner selection task. The attributes in the experiment and possible attribute values can be seen below: Race/ethnicity: White/Black/Asian Education: High school/Undergraduate degree/Graduate degree Number of sexual partners (past 3 months): 1/2-5 partners/6 or more Recreational drug use: Never/Sometimes/Often Seeking a...: Committed relationship/Casual relationship Use of condoms: Occasional/Frequent
Time frame: Through study completion, approximately 2 months
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