Table 1

Baseline characteristics of participants

CharacteristicsSelf-testing arm
(n=1535)
Conventional testing arm
(n=1560)
Difference
(95% CI)
Age, mean (SD)28.23 (8.83)29.18 (8.56)− 0.95 (−1.56 to 0.34)
NA=missing (n (%))0 (0.00)1 (0.06)−0.0006 (−0.0018 to 0.0006)
Gender
(n (%) male)
541 (35.24)378 (24.23)0.11 (0.08 to 0.14) *
NA=missing0 (0.00)1 (0.06)−0.0006 (−0.0018 to 0.0006)
Education (n (%))
0=no schooling OR primary school114 (7.43)100 (6.41)0.01 (−0.01 to 0.03)
1=high school OR more advanced1420 (92.51)1460 (93.59)−0.01 (−0.03 to 0.01)
NA=missing1 (0.07 %)0 (0.00 %)0.0007 (−0.0006 to 0.0020)
Work situations (n (%))
0=employed (full time)337 (21.95)567 (36.35)−0.14 (−0.18 to 0.11)*
1=employed (part time)207 (13.49)177 (11.35)0.02 (−0.002 to 0.044)
2=not employed916 (59.67)812 (52.05)0.07 (0.04 to 0.11)*
3=retired12 (0.78)4 (0.26)0.005 (0.0001 to 0.0103)*
NA=missing63 (4.10)0 (0.00)0.041 (0.031 to 0.051)*
Monthly income (n (%))
0 =<3000 rand1190 (77.52 %)1167 (74.81)0.03 (−0.002 to 0.06)
1=3000–6000 rand153 (9.97)304 (19.49)−0.09 (−0.12 to 0.07)*
2=6000–9000 rand61 (3.97)46 (2.95)0.01 (−0.003 to 0.023)
3 =>9000rRand68 (4.43)40 (2.56)0.02 (0.01 to 0.03)*
NA=missing63 (4.10)3 (0.19)0.04 (0.03 to 0.05)*
Source of income (n (%))
0=employed531 (34.59)742 (47.52)−0.13 (−0.16 to 0.09)*
1=family or friends947 (61.69)766 (49.10)0.13 (0.09 to 0.16)*
2=grant47 (3.06)46 (2.95)0.001 (−0.01 to 0.01)
3=pension9 (0.59)6 (0.38)0.002 (−0.003 to 0.006)
NA=missing1 (0.07)0 (0.00)0.007 (−0.0006 to 0.0020)
Previous HIV test (n (%))
0=first-ever HIV test75 (4.89)58 (3.72)0.01 (−0.002 to 0.026)
1=repeat HIV test (last test less than 1 year ago)915 (59.61)1021 (65.45)−0.06 (−0.09 to 0.02)*
2=repeat HIV test (last test more than 1 year ago)544 (35.44)481 (30.83)0.05 (0.01 to 0.08)*
NA=missing1 (0.07)0 (0.00)0.0007 (−0.0006 to 0.0020)
Current partner your husband or wife?
(n (%) yes)
429 (27.95)432 (27.69)0.002 (−0.03 to 0.03)
NA=missing69 (4.50)12 (0.77)0.04 (0.03 to 0.05)*
Are you sexually active? (n (%) yes)1223 (79.67)1481 (94.94)−0.15 (−0.17 to 0.13)*
NA=missing74 (4.82)0 (0.00)0.05 (0.04 to 0.06)*
In the past 6 months, sex with multiple partners (n (%) yes)167 (10.88)136 (8.720.02 (0.001 to 0.042)*
NA=missing81 (5.28)0 (0.00)0.05 (0.04 to 0.06)*
In the past 6 months, sex with a sex worker (n (%) yes)21 (1.37)3 (0.19)0.01 (0.005 to 0.018)*
NA=missing (%)81 (5.28)0 (0.00)0.05 (0.04 to 0.06)
In the past 6 months, sex with an HIV-infected partner (n (%) yes)42 (2.74)35 (2.24)0.005 (−0.006 to 0.015)
NA=missing81 (5.28)0 (0.00)0.05 (0.04 to 0.06)
Have you ever been diagnosed with:
Tuberculosis (n (%) yes) * 121 (7.88)126 (8.08)−0.002 (−0.02 to 0.02)
Other lung infection (n (%) yes) * 6 (0.39)5 (0.32)0.0007 (−0.003 to 0.005)
Diabetes (n (%) yes) * 14 (0.91)29 (1.86)−0.009 (−0.0177 to 0.0012)*
Hypertension (n (%) yes) * 46 (3.00)128 (8.21)−0.05 (−0.07 to 0.04)*
Asthma (n (%) yes) * 36 (2.35)81 (5.19)−0.04 (−0.05 to 0.02)*
  • *No missing data in both arms.