Table 1

Baseline characteristics of participants by site and overall

VariableMean (SD) or N (%)
All sites (n=3087)Blantyre, Malawi (n=441)Lilongwe, Malawi (n=596)Durban, South Africa (n=702)Hlabisa, South Africa (n=346)Philadelphia, USA (n=200)Lusaka, Zambia (n=319)Chitungwiza, Zimbabwe (n=260)Harare, Zimbabwe (n=223)
Age26.3 (6.2)25.9 (5.3)27.3 (6.3)25.2 (4.5)25.3 (5.9)35.5 (9.9)23.0 (3.5)25.8 (4.4)26.9 (4.5)
Some secondary school1944 (63%)134 (30%)97 (16%)654 (93%)271 (78%)197 (99%)140 (44%)245 (94%)206 (92%)
Married1926 (62%)421 (95%)592 (99%)131 (19%)30 (9%)28 (14%)258 (81%)249 (96%)217 (97%)
Living with partner2102 (68%)418 (95%)590 (99%)275 (39%)36 (10%)62 (31%)257 (81%)247 (95%)217 (97%)
>1 partner in past 3 months99 (3%)1 (<1%)1 (<1%)27 (4%)3 (1%)55 (28%)10 (3%)1 (<1%)1 (<1%)
Number of vaginal sex acts in past week2.9 (2.5)3.4 (2.4)2.7 (2.2)2.3 (2.0)1.9 (2.6)2.4 (2.6)2.6 (2.3)5.0 (2.8)4.2 (2.0)
Number using condom at last vaginal sex2095 (68%)228 (52%)330 (55%)540 (77%)215 (62%)122 (61%)246 (77%)225 (87%)189 (85%)
Ever had anal sex140 (5%)3 (1%)4 (1%)29 (4%)1 (<1%)91 (46%)8 (3%)3 (1%)1 (<1%)
Number using hormonal contraception2123 (69%)318 (72%)461 (77%)414 (59%)163 (47%)19 (10%)275 (86%)253 (97%)220 (99%)
STI at screening:
 Gonorrhoea22 (1%)7 (2%)2 (<1%)5 (1%)4 (1%)0 (0%)2 (1%)1 (<1%)1 (<1%)
 Chlamydia108 (3%)3 (1%)2 (<1%)46 (7%)26 (8%)5 (3%)10 (3%)10 (4%)6 (3%)
 Trichomoniasis225 (7%)27 (6%)67 (11%)36 (5%)51 (15%)5 (3%)21 (7%)16 (6%)2 (1%)
 BV (Nugent ≥7)1154 (37%)152 (34%)213 (36%)273 (39%)134 (39%)94 (47%)120 (38%)91 (35%)77 (35%)
  • BV, bacterial vaginosis; STI, sexually transmitted infections.