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. 2023 Oct 5;9:e45134. doi: 10.2196/45134

Table 2.

Mean Perceived Risk of HIV Scale scores compared across sexual risk behaviors and stratified by current versus no current pre-exposure prophylaxis use.

Variable Current PrEPa use, n=448 No current PrEP use, n=3896
Respondents, n (%) PRHSb score, mean (SD) P value Respondents, n (%) PRHS score, mean (SD) P value
HIRI-MSMc score .82

<.001

Mean (SD) 21 (9.4) N/Ad
13.2 (8.1) N/A

>10 387 (86.4) 24.5 (5.1)
2309 (59.3) 26.8 (4.7)

<10 61 (13.6) 24.7 (5.1)
1587 (40.7) 24.7 (4.8)
Number of sex partnerse .57

<.001

1-5 111 (24.8) 25 (4.9)
2196 (56.4) 25.1 (4.8)

6-10 105 (23.4) 24.4 (4.9)
818 (21) 26.5 (4.6)

11-30 138 (30.8) 24.7 (5.4)
637 (16.4) 27.2 (4.5)

30+ 94 (21) 24 (5)
245 (6.3) 28.3 (5.4)
Steady partnere .03

<.001

No 305 (68.1) 24.5 (4.9)
2603 (66.8) 26.2 (4.8)

Yes, HIV negative 96 (21.4) 23.8 (5.3)
1019 (26.2) 25 (4.9)

Yes, living with HIV 33 (7.4) 26 (4.8)
120 (3.1) 27.4 (4.9)

Yes, I don’t know their HIV status 14 (3.1) 27.2 (6.8)
154 (4) 27 (4.6)
Sex partner living with HIVe .40

<.001

Yes 155 (34.6) 24.8 (5.3)
346 (8.9) 27.8 (4.8)

No 293 (65.4) 24.4 (5)
3550 (91.1) 25.7 (4.8)
Receptive CAIe,f .67

<.001

Yes 294 (65.6) 24.6 (5.1)
1558 (40) 27 (4.7)

No 154 (34.4) 24.4 (5.1)
2338 (60) 25.2 (4.8)
STIg diagnosise .88

<.001

Yes 128 (28.6) 24.5 (5.3)
452 (11.6) 27.8 (4.8)

No or unknown 320 (71.4) 24.6 (5)
3444 (88.4) 25.7 (4.8)
Chemsexe,h .91

<.001

Yes 168 (37.5) 24.5 (5.1)
837 (21.5) 27.2 (4.8)

No 280 (62.5) 24.6 (5.1)
3059 (78.5) 25.6 (4.8)
Transactional sexi .09

.001

Yes 33 (7.4) 23.1 (5)
242 (6.2) 26.9 (5.7)

No 415 (92.6) 24.7 (5.1)
3654 (93.8) 25.9 (4.8)
PrEP adherence in past weekj .05

N/A

Every day 393 (87.7) 24.4 (5.1)
N/A N/A

4 to 6 days 39 (8.7) 25.4 (4.4)
N/A N/A

3 or fewer days 16 (3.6) 27.2 (6.3)
N/A N/A

aPrEP: pre-exposure prophylaxis.

bPRHS: Perceived Risk of HIV Scale.

cHIRI-MSM: HIV Incidence Risk Index for Men Who Have Sex With Men. The score is calculated based on respondent age and the following behaviors in the previous 6 months: number of male partners, number of male partners living with HIV, receptive condomless anal sex with any HIV-status partner, insertive condomless anal sex with a partner living with HIV, use of stimulants (cocaine; crack, basic paste, or oxy; ecstasy; methamphetamines [crystal or speed]; gamma hydroxybutyrate or gamma butyrolactone; poppers; or other inhalants). A score of >10 suggests the respondent may benefit from pre-exposure prophylaxis.

dN/A: not applicable.

eAsked in reference to the previous 6 months.

fCAI: condomless anal intercourse.

gSTI: sexually transmitted infection. The survey specified syphilis, urethral or rectal gonorrhea, and urethral or rectal chlamydia.

hUse of any of the following substances before or during sex: cocaine; crack, basic paste, or oxy; marijuana, hashish, or skank; ecstasy; methamphetamines (crystal or speed); gamma hydroxybutyrate or gamma butyrolactone; poppers; other inhalants; mephedrone; hallucinogens (LSD, mushroom tea, others); or others.

iSex for money or some other good (eg, gifts, housing).

jAnswered only by those currently taking PrEP (n=448).