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
a
All estimates from GEE models, adjusted for age, race, and insurance status
b
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.
c
Quadratic time included in this model