Incidence and time-varying predictors of HIV and sexually transmitted infections among male sex workers in Mexico City

Table 2 Incidence of HIV and sexually transmitted infections among male sex workers in Mexico City

Incidence of STIs confirmed via laboratory testing	New cases (n)	Person-years (PY) at risk	Rate, cases/100 PY (95% CI)^a
HIV	7	133.82	5.23 (2.15–10.31)
Chlamydia^b	10	194.12	5.15 (2.58–9.34)
Gonorrhea^b	8	203.67	3.93 (1.88–7.83)
Active Syphilis	21	161.04	13.04 (8.24–19.94)
Hepatitis B	4	189.28	2.11 (0.53–4.89)
Hepatitis C	2	209.82	0.95 (0.00–3.16)
Any STI (excluding HIV)	39	125.83	30.99 (21.73–40.26)
Any STI (including HIV)	44	87.87	50.08 (37.60–62.55)

STI sexually transmitted infection, n total respondents, PY person-years, CI confidence intervals
^aCalculated using person-clustered, bias-corrected, accelerated bootstrapping with 1000 replications
New Cases = instances of new cases during study
^bSite of infection is urethral, no rectal or pharyngeal testing was done for these STIs

ISSN: 2049-9957