Table 4 Full sample overview including all volunteers at screening (including those with demographic data only and those with demographic and behavioural data)

n

1934

200

1331

403

Age (mean (SD))

24.7 (4.5)

25.7 (5.5)

24.4 (4.2)

25.1 (5)

< 0.01

Sex = female, n (%)

1530 (79.2)

126 (63.3)

1001 (75.2)

403 (100)

< 0.01

Education level, n (%)

NA

No formal education

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

Some primary school

8 (0.4)

1 (0.5)

6 (0.5)

1 (0.2)

Completed primary school

38 (2)

7 (3.5)

17 (1.3)

14 (3.5)

Some secondary/high school

801 (41.5)

78 (39.2)

532 (40.1)

191 (47.4)

Completed secondary/high school

962 (49.8)

103 (51.8)

677 (51)

182 (45.2)

Some university/technical education

96 (5)

3 (1.5)

81 (6.1)

12 (3)

Completed university/technical education

15 (0.8)

7 (3.5)

7 (0.5)

1 (0.2)

National Certificate/Trade Certificate/N

7 (0.4)

0 (0.0)

6 (0.5)

1 (0.2)

Some graduate school

1 (0.1)

0 (0.0)

1 (0.1)

0 (0.0)

Completed graduate school

2 (0.1)

0 (0.0)

1 (0.1)

1 (0.2)

Prefer not to answer

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

HIV+, n (%)

209 (10.8)

15 (7.5)

152 (11.4)

42 (10.4)

0.24

Enrolled, n (%)

1034 (53.5)

78 (39)

761 (57.2)

195 (48.4)

< 0.01

Screened out/declined, n (%)

900 (46.5)

122 (61)

570 (42.8)

208 (51.6)

< 0.01

Demographic data available, n (%)

1934 (100)

200 (100)

1331 (100)

403 (100)

NA

Behavioural data available, n (%)

1156 (59.8)

200 (100)

761 (57.2)

195 (48.4)

< 0.01

702 risk assessment tool data available, n (%)

509 (26.3)

0 (0.0)

509 (38.2)

0 (0.0)

< 0.01

All demographic and behavioural data available, n (%)

676 (35)

200 (100)

281 (21.1)

195 (48.4)

< 0.01

Some demographic and behavioural data available, n (%)

1384 (71.6)

200 (100)

989 (74.3)

195 (48.4)

< 0.01

Motivation for enrolment data available, n (%)

78 (4)

78 (39)

0 (0.0)

0 (0.0)

< 0.01