Table 1.
Summary of bivariable analysis of possible socio-economic TB transmission risk factors, n = 505
| Characteristic | Total: N = 505 | Non-clustered N = 157 (31%) | Clustered N = 348 (69%) | P-value | OR (95% CI) |
|---|---|---|---|---|---|
| Education, n(%) | |||||
| No formal education | 23 (5) | 8 (5) | 15 (4) | 1.00 (reference) | |
| Some primary school | 149 (29) | 45 (29) | 104 (30) | 0.66 | 1.23 (0.49; 3.11) |
| Some high school | 248 (49) | 75 (48) | 173 (50) | 0.65 | 1.23 (0.50; 3.03) |
| Matric | 81 (16) | 27 (17) | 54 (15) | 0.90 | 1.07 (0.40; 2.83) |
| Tertiary education | 4 (1) | 2 (1) | 2 (1) | 0.57 | 0.53 (0.06;4.53) |
| Employed, n (%) | 163 (32) | 53 (34) | 110 (32) | 0.63 | 0.91 (0.61;1.35) |
| Income ZAR, median (IQR) | 1600 (1060;2250) | 0.82* | 1.0 (0.99;1.00) | ||
| < 2000 | 95 (61) | 30 (58) | 65 (62) | 1.00 (reference) | |
| R2000-R5000 | 57 (37) | 19 (36) | 38 (37) | 0.82 | 0.92 (0.46;1.86) |
| > 5000 | 4 (2) | 3 (6) | 1 (1) | 0.11 | 0.15 (0.02;1.54) |
| Housing Conditions, n (%) | |||||
| Informal housing, n (%) | 449 (89%) | 138 (88) | 311 (89) | 0.63 | 0.86 (0.48;1.56) |
| Electricity in house, n (%) | 486 (96) | 150 (96) | 336 (96) | 0.58 | 1.31 (0.50;3.38) |
| Toilet in house, n (%) | 47 (9) | 13 (8) | 34 (10) | 0.59 | 1.20 (0.61;2.34) |
| Number of occupants in house, median (IQR); n (%) | 3 (2;4) | ||||
| 1–2 | 214 (42) | 65 (41) | 149 (42) | 1.00 (reference) | |
| 3–4 | 166 (33) | 50 (32) | 116 (33) | 0.96 | 1.01 (0.65;1.57) |
| 5 or more | 125 (25) | 42 (27) | 83 (24) | 0.54 | 0.86 (0.54;1.38) |
| No. of rooms used for sleeping, median (IQR) | 1 (1; 2) | ||||
| 1 room | 299 (59) | 89 (57) | 210 (60) | 1.00 (reference) | |
| 2 rooms | 175 (35) | 53 (34) | 122 (35) | 0.91 | 0.98 (0.65; 1.47) |
| 3–6 rooms | 31 (6) | 15 (9) | 16 (5) | 0.04 | 0.45 (0.21; 0.95) |
| Consumed alcohol in last 12 months, n (%) | 185 (37) | 49 (31) | 136 (39) | 0.09 | 1. 41 (0.94; 2.11) |
| Been to a shebeen in the last12 months, n (%) | 113 (22) | 29 (18) | 84 (24) | 0.16 | 1.40(0.88; 2.25) |
| Regularly takes a taxi, n (%) | 478 (95) | 146 (93) | 332 (93) | 0.27 | 1.56 (071; 3.45) |
| Meet group regularly, n (%) | 44 (9) | 15 (10) | 29 (8) | 0.65 | 0.86 (0.45; 1.66) |
| Number of new sex partners in the last 6 months, n (%): | |||||
| 0 | 399 (79) | 117 (75) | 282 (81) | 1.00 (reference) | |
| 1–3 | 106 (21) | 40 (25) | 66 (19) | 0.10 | 0.68 (0.44; 1.07) |
Summary of the bivariable analysis of possible socio-economic TB transmission risk factors by clustered vs. non-clustered cases
*continuous variable; Wilcoxon signed rank test