Exposure | Unadjusted model | Adjusted model A | Adjusted model Bb | |||
---|---|---|---|---|---|---|
Odds Ratio (95% CI) | Odds Ratio (95% CI) | p | Odds Ratio (95% CI) | p | ||
Cluster | 1 | 1.0 | 1.0 | < 0.001 | ||
2 | 0.84 (0.51; 1.41) | 1.73 (1.03; 2.92) | ||||
3 | 0.82 (0.41; 1.66) | 1.45 (0.70; 2.97) | ||||
4 | 1.55 (1.00; 2.38) | 2.22 (1.42; 3.48) | ||||
5 | 0.99 (0.61; 1.59) | 1.78 (1.09; 2.90) | ||||
6 | 2.11 (1.41; 3.15) | 4.41 (2.91; 6.69) | ||||
7 | 0.79 (0.48; 1.32) | 1.4 (0.83; 2.34) | ||||
8 | 0.39 (0.21; 0.73) | 0.66 (0.35; 1.26) | ||||
9 | 1.07 (0.63; 1.79) | 1.79 (1.05; 3.05) | ||||
10 | 1.97 (1.32; 2.94) | 3.53 (2.34; 5.34) | ||||
11 | 1.70 (1.12; 2.57) | 1.81 (1.18; 2.76) | ||||
12 | 0.81 (0.51; 1.31) | 2.03 (1.24; 3.32) | ||||
13 | 0.25 (0.12; 0.52) | 0.42 (0.20; 0.88) | ||||
14 | 0.86 (0.54; 1.37) | 1.72 (1.06; 2.78) | ||||
15 | 1.28 (0.83; 1.98) | 1.59 (1.02; 2.49) | ||||
Region | Carletonville | 1.0 | – | 1.0 | 0.035 | |
Orkney | 1.30 (1.06; 1.6) | – | 0.87 (0.68; 1.12) | |||
Welkom | 1.58 (1.28; 1.96) | – | 1.43 (1.05; 1.93) | |||
Company | A | 1.0 | – | 1.0 | 0.115 | |
B | 0.64 (0.50; 0.81) | – | 0.76 (0.54; 1.05) | |||
C | 1.10 (0.91; 1.33) | – | 0.96 (0.69; 1.35) | |||
Gender | Male | 1.0 | 1.0 | 0.729 | 1.0 | 0.674 |
Female | 0.15 (0.04; 0.62) | 1.31 (0.3; 5.77) | 1.39 (0.32; 6.11) | |||
Age (years) | 18–34 | 1.0 | 1.0 | < 0.001 | 1.0 | < 0.001 |
35–39 | 3.10 (1.38; 6.96) | 1.73 (0.66; 4.55) | 1.67 (0.64; 4.37) | |||
40–44 | 9.16 (4.58; 18.36) | 3.1 (1.17; 8.17) | 2.92 (1.11; 7.65) | |||
45–49 | 23.93 (12.23; 46.83) | 5.77 (2.17; 15.38) | 5.34 (2.01; 14.14) | |||
50+ | 37.29 (19.15; 72.62) | 7.25c (2.68; 19.64) | 6.5c (2.41; 17.51) | |||
Racial ascription | Other | 1.0 | 1.0 | 0.146 | 1.0 | 0.016 |
Black | 3.41 (1.40; 8.26) | 2.81 (1.09; 7.21) | 2.79 (1.09; 7.15) | |||
Country of origina | South Africa | 1.0 | 1.0 | < 0.001 | 1.0 | 0.004 |
Lesotho | 1.72 (1.42; 2.08) | 1.16 (0.95; 1.42) | 1.16 (0.95; 1.42) | |||
Swaziland | 1.15 (0.73; 1.81) | 0.84 (0.53; 1.34) | 0.90 (0.57; 1.43) | |||
Mozambique | 0.72 (0.52; 1.00) | 0.54 (0.38; 0.77) | 0.61 (0.43; 0.86) | |||
Botswana | 2.3 (1.36; 3.88) | 1.09 (0.63; 1.88) | 1.06 (0.62; 1.82) | |||
Years since entry into industry | 0–4 | 1.0 | 1.0 | < 0.001 | 1.0 | < 0.001 |
5–9 | 2.54 (0.80; 8.04) | 2.31 (0.71; 7.58) | 2.20 (0.67; 7.19) | |||
10–14 | 3.23 (1.13; 9.20) | 2.04 (0.62; 6.71) | 2.17 (0.66; 7.12) | |||
15–19 | 9.39 (3.69; 23.88) | 3.89 (1.2; 12.63) | 4.19 (1.30; 13.51) | |||
20–24 | 17.40 (7.06; 42.89) | 5.53 (1.7; 17.98) | 5.75 (1.78; 18.59) | |||
25–29 | 33.52 (13.71; 81.93) | 7.55 (2.3; 24.72) | 7.93 (2.43; 25.82) | |||
30+ | 52.06 (21.43; 126.47) | 10.12b (3.06; 33.41) | 10.65b (3.24; 34.99) | |||
Skill level | Skilled/Official | 1.0 | 1.0 | 0.234 | 1.0 | 0.179 |
Unskilled | 1.76 (1.20; 2.58) | 1.28 (0.84; 1.94) | 1.26 (0.83; 1.92) | |||
Under ground work | None/part time | 1.0 | 1.0 | < 0.001 | 1.0 | < 0.001 |
Full time | 0.52 (0.33; 0.81) | 2.15 (1.35; 3.43) | 2.14 (1.34; 3.42) |