Table 1.

Sociodemographic and Behavioral Characteristics of Women with Negative Serologic Testing for HSV-2 at Enrollment, According to Study-Group Assignment.^*

Variable	Tenofovir Gel (N = 205)	Placebo Gel (N = 224)
Sociodemographic characteristic
Age — yr	22.2±3.6	21.6±3.4
Parity	0.7±1.0	0.7±0.8
High-school education or more — no. (%)	92 (44.9)	98 (43.8)
Income per month <1000 rands — no./total no. (%)†	167/179 (93.3)	173/185 (93.5)
Using hormonal contraception — no. (%)	202 (98.5)	224 (100)
Stable partner — no. (%)‡	202 (98.5)	222 (99.1)
Living with regular partner — no. (%)§	18 (8.8)	9 (4.0)
Sexual behavior
Age at first sexual experience — yr	17.5±2.1	17.4±1.8
Age of oldest partner in past 30 days — yr	25.2±4.3	24.8±4.2
No. of lifetime sex partners	2.2±2.1	3.0±12.1
No. of sex acts in past 30 days	8.5±8.2	7.5±6.8
New sex partner in past 30 days — no. (%)	1 (0.5)	3 (1.3)
Knows sex partner had other sex partners in past 30 days — no. (%)	35 (17.1)	41 (18.3)
Knows sex partner had HIV test in past 30 days — no. (%)	3 (1.5)	7 (3.1)
Reports alcohol consumption by partner and self before sex in general — no. (%)	7 (3.4)	7 (3.1)
Reports alcohol consumption by partner or self before the last time they had sex — no. (%)	51 (24.9)	59 (26.3)
Reports always using condom during sex — no. (%)	61 (29.8)	63 (28.1)
Location of study site — no. of participants (%)
Urban	57 (27.8)	57 (25.4)
Rural	148 (72.2)	167 (74.6)

^*Plus–minus values are means ±SD. There were no significant differences between the two groups, except for the difference in mean parity (P = 0.01) and in living with a regular partner (P = 0.03). HIV denotes human immunodefiency virus, and HSV-2 herpes simplex virus type 2.

^†A value of 1000 South African rands is equal to approximately 80 U.S. dollars.

^‡A stable partner was defined as someone with whom the woman has a regular sexual relationship.

^§A regular partner included a husband or a stable partner.