Table 1. Baseline socio-demographic and sexual behaviour characteristics of young women (n = 365) included in the EVRI study, Cape Town, South Africa, October 2012- July 2013.

	n1	%1
Age (years)
Median [IQR]	20	[19–22]
< 20 year	141	38.6
20–21 year	117	32.1
≥ 22 year	107	29.3
Race2
Black	331	94.3
Other	20	5.7
Highest education level2
≤ Grade 12	212	60.4
Passed grade 12	69	19.7
Some college/tech	70	19.9
Marital status2
Single	334	95.2
Other	17	4.8
Alcohol use in past month2
No	137	39.0
Yes	214	61.0
Current smoker3
No	286	96.3
Yes	11	3.7
Sex related characteristics
Age at first sex act (years)4
Median [IQR]	17	[16–18]
< 16 year	59	20.9
16–17 year	140	49.7
≥ 18 year	83	29.4
Ever been pregnant2
No	178	50.7
Yes	173	49.3
Current birth control use2
No	184	52.4
Yes	167	47.6
Type of birth control5
Condom	84	50.3
Depo-Provera	68	40.7
Oral contraceptives	10	6.0
Other	5	3.0
Lifetime number of sex partners6
Median [IQR]	2	[1–3]
0–1	130	37.4
2	75	21.6
3	74	21.3
≥ 4	69	19.8
Sex partners 6 months before baseline2
Median [IQR]	1	[0–1]
0	160	45.6
1	152	43.3
≥ 2	39	11.1
Condom use 6 months before baseline2,7
Always	80	41.9
More than half of the time	26	13.6
Half of the time	27	14.1
Less than half of the time or never	58	30.4
Ever received presents/money/drugs for sex2
No	338	96.3
Yes	13	3.7

Abbreviations: IQR, interquartile range;

¹. Unless stated otherwise

². Data missing for 14 participants

³. Data missing for 68 participants

⁴. Data missing for 83 participants

⁵. Among participants using birth control

⁶. Data missing for 17 participants

⁷. Among participants who had sex in the 6 months before baseline.