TABLE 2—

HIV Prevalence and Incidence Among Injection Drug Users Admitted to Beth Israel Medical Center Drug Detoxification Program: New York City, 1990–2002

Period of Interview	Total No. of Injection Drug Users	No. HIV Negative	No. HIV Positive From EIA	No. HIV Positive From STARHS	Incident Cases	Annualized Incidence Rate, % (95% Confidence Interval)	HIV Prevalence, %
4-time-period analysis
1990–1992	791	392	399	303	5	3.55 (1.73, 5.37)	50
1993–1995	686	383	303	255	4	2.63 (1.04, 4.23)	44
1996–1998	705	489	216	180	2	1.05 (0.15, 1.95)	31
1999–2002	1469	1226	243	221	4	0.77 (0.28, 1.26)	17
2-time-period analysis
1990–1995	1477	775	702	558	9	3.09 (1.88, 4.30)	48
1996–2002	2174	1715	459	401	6	0.86 (0.42, 1.29)	21

Note. EIA = enzyme immunoassay; STARHS = Serologic Test Algorithm for Recent HIV Seroconversion.