Table I.

Characteristics of Study Participants

	N=438 a N	%
Age distribution, in years
<20	37	8
20–29	66	15
30–49	227	52
≥50	108	25
Male gender	195	45
No. of lifetime sex partners
0–2	147	34
3+	289	66
Regularly use condoms	35	8
Prior blood transfusion	7	2
Recent medical injections	183	42
HIV-1 positive	59	14
Syphilis seroreactive b	37	8

^aNumbers may not sum exactly due to missing data

^bReactive on nontreponemal screening test, including RPR (reactive plasma reagin) or TRUST (toludine red unheated serum test)