Table II.
Risk of Reporting Sexual Behaviors at Each Follow-up Period among MSM on PrEP at PHSKC STD Clinic, Comparing Each Time Point to the Initial PrEP Visit a
3 Months | 6 Months | 9 Months | 12 Months | ||||||
---|---|---|---|---|---|---|---|---|---|
Sexual Behavior | N | aIRR | 95% CI | aIRR | 95% CI | aIRR | 95% CI | aIRR | 95% CI |
Number of Male Sexual Partners |
183 | 1.01 | (0.96, 1.05) |
1.01 | (0.93, 1.11) |
1.02 | (0.89, 1.17) |
1.03 | (0.86, 1.23) |
Partner HIV Status | aRR | 95% CI | aRR | 95% CI | aRR | 95% CI | aRR | 95% CI | |
Any HIV-Positive Partners |
181 | 1.01 | (0.96, 1.06) |
1.01 | (0.91, 1.12) |
1.02 | (0.87, 1.19) |
1.02 | (0.83, 1.26) |
Any HIV-Negative Partners |
181 | 1.00 | (0.98, 1.01) |
0.99 | (0.97, 1.02) |
0.99 | (0.95, 1.02) |
0.98 | (0.93, 1.03) |
Any Unknown Status Partners |
181 | 0.80 | (0.74, 0.87) |
0.64 | (0.54, 0.76) |
0.51 | (0.40, 0.66) |
0.41 | (0.29, 0.57) |
Sexual Position | |||||||||
Receptive | 182 | 1.00 | (0.99, | 1.00 | (0.97, | 1.01 | (0.96, | 1.01 | (0.95, |
1.02) | 1.04) | 1.06) | 1.08) | ||||||
Insertive | 182 | 1.00 | (0.98, | 1.00 | (0.96, | 1.00 | (0.94, | 1.00 | (0.93, |
1.02) | 1.04) | 1.06) | 1.08) | ||||||
Never Uses Condomsb | |||||||||
Overall | 180 | 1.10 | (1.03, | 1.21 | (1.06, | 1.33 | (1.10, | 1.46 | (1.13, |
1.17) | 1.37) | 1.60) | 1.88) | ||||||
During Receptive Anal | 167 | 1.12 | (1.05, | 1.25 | (1.11, | 1.40 | (1.17, | 1.56 | (1.23, |
Sex | 1.19) | 1.41) | 1.67) | 1.98) | |||||
During Insertive Anal | 152 | 1.07 | (1.00, | 1.15 | (1.00, | 1.23 | (1.01, | 1.32 | (1.01, |
Sex | 1.15) | 1.31) | 1.50) | 1.72) | |||||
With HIV-Positive | 76 | 1.08 | (1.00, | 1.16 | (1.00, | 1.25 | (1.00, | 1.35 | (0.99, |
Partners | 1.16) | 1.36) | 1.58) | 1.84) | |||||
With HIV-Negative | 176 | 1.08 | (1.02, | 1.16 | (1.03, | 1.25 | (1.05, | 1.34 | (1.06, |
Partners | 1.14) | 1.30) | 1.49) | 1.70) | |||||
With Unknown Status Partnersc |
90 | 1.61 | (1.13, 2.28) |
2.07 | (1.18, 3.65) |
2.15 | (1.10, 4.20) |
1.80 | (0.90, 3.58) |
aIRR: Adjusted Incidence Rate Ratio
aRR: Adjusted Relative Risk
All estimates from GEE models, adjusted for age, race, and insurance status
The subcategories refer to the risk of reporting never using condoms with partners specific to each behavior category. E.g. for “ During Receptive Anal Sex,” this is the risk of reporting never using condoms with partners with whom the patient has engaged in receptive anal sex.
Quadratic time included in this model