From: Occupational cold exposure and symptoms of carpal tunnel syndrome – a population-based study
Exposure variable | Exposure level | Carpal tunnel syndrome | References | Simple analyses | Multiple analyses a |
---|---|---|---|---|---|
Proportion of working hours | N (%) | N (%) | Crude OR (95% CI) | Adjusted OR (95% CI) | |
Contact cooling | Never | 254 (63.3) | 2,869 (73.9) | Reference | Reference |
One tenth | 74 (18.5) | 645 (16.6) | 1.30 (0.99–1.70) | 1.19 (0.87–1.63) | |
One quarter | 28 (7.0) | 182 (4.7) | 1.74 (1.14–2.64) | 1.60 (0.99–2.56) | |
Half | 16 (4.0) | 82 (2.1) | 2.20 (1.27–3.82) | 1.92 (1.04–3.57) | |
Three quarters | 15 (3.7) | 62 (1.6) | 2.73 (1.53–4.87) | 2.38 (1.26–4.52) | |
Almost always | 14 (3.5) | 42 (1.1) | 3.77 (2.03–6.99) | 3.20 (1.62–6.33) | |
Ambient cooling | Never | 227 (56.2) | 2,470 (63.6) | Reference | Reference |
One tenth | 82 (20.3) | 766 (19.7) | 1.17 (0.89–1.52) | 1.14 (0.85–1.53) | |
One quarter | 48 (11.9) | 329 (8.5) | 1.59 (1.14–2.21) | 1.57 (1.09–2.27) | |
Half | 21 (5.2) | 187 (4.8) | 1.22 (0.76–1.96) | 1.11 (0.66–1.86) | |
Three quarters | 13 (3.2) | 68 (1.8) | 2.08 (1.13–3.82) | 2.10 (1.10–4.01) | |
Almost always | 13 (3.2) | 64 (1.6) | 2.21 (1.20–4.07) | 2.00 (1.03–3.88) | |
Severe ambient cooling | Never | 231 (57.5) | 2,723 (70.2) | Reference | Reference |
One tenth | 81 (20.1) | 740 (19.1) | 1.29 (0.99–1.68) | 1.35 (1.01–1.82) | |
One quarter | 41 (10.2) | 198 (5.1) | 2.44 (1.70–3.51) | 2.45 (1.65–3.64) | |
Half | 22 (5.5) | 119 (3.1) | 2.18 (1.36–3.50) | 2.00 (1.18–3.40) | |
Three quarters | 10 (2.5) | 57 (1.5) | 2.07 (1.04–4.10) | 2.09 (1.02–4.27) | |
Almost always | 17 (4.2) | 43 (1.1) | 4.66 (2.62–8.30) | 4.02 (2.09–7.71) |