Exposure Metrica | Cases (%) | Controls (%) | ORb (95 % CI) | ||||
---|---|---|---|---|---|---|---|
Ever exposed | |||||||
No | 1133 | (64.0) | 869 | (63.9) | 1.00 | ||
Yes | 638 | (36.0) | 491 | (36.1) | 0.88 | (0.74, | 1.06) |
Highest attained exposure concentration | |||||||
Unexposed | 1133 | (64.0) | 869 | (63.9) | 1.00 | ||
Low | 450 | (25.4) | 377 | (27.7) | 0.79 | (0.65, | 0.96) |
Medium | 136 | (7.7) | 89 | (6.5) | 1.00 | (0.73, | 1.36) |
High | 52 | (2.9) | 25 | (1.8) | 1.65 | (0.98, | 2.80) |
p-trend | 0.78 | ||||||
Duration of exposure (years) | |||||||
Unexposed | 1133 | (64.5) | 869 | (64.4) | 1.00 | ||
> 0 to <11 | 208 | (11.9) | 157 | (11.6) | 0.90 | (0.70, | 1.16) |
≥ 11 to ≤31 | 220 | (12.5) | 166 | (12.3) | 0.91 | (0.71, | 1.18) |
> 31 | 195 | (11.1) | 157 | (11.6) | 0.80 | (0.60, | 1.08) |
p-trend | 0.11 | ||||||
Duration of exposure at high concentration (years) | |||||||
Unexposed | 1719 | (97.2) | 1335 | (98.2) | 1.00 | ||
> 0 to ≤10 | 29 | (1.6) | 13 | (1.0) | 1.60 | (0.80, | 3.21) |
> 10 | 21 | (1.2) | 11 | (0.8) | 1.90 | (0.85, | 4.23) |
p-trend | 0.04 | ||||||
Frequency of exposure | |||||||
Unexposed | 1191 | (68.8) | 910 | (71.1) | 1.00 | ||
Low: 5 % | 76 | (4.4) | 60 | (4.7) | 1.21 | (0.80, | 1.82) |
Medium: 6–30 % | 351 | (20.3) | 229 | (17.9) | 1.10 | (0.88, | 1.38) |
High: >30 % | 113 | (6.5) | 81 | (6.3) | 1.06 | (0.76, | 1.48) |
p-trend | 0.37 | ||||||
Cumulative occupational exposurec | |||||||
Unexposed | 1133 | (64.5) | 869 | (64.6) | 1.00 | ||
Lowest tertile | 174 | (9.9) | 139 | (10.3) | 0.86 | (0.65, | 1.14) |
Middle tertile | 246 | (14.0) | 183 | (13.6) | 0.85 | (0.66, | 1.09) |
Highest tertile | 158 | (11.6) | 158 | (11.7) | 0.89 | (0.69, | 1.15) |
p-trend | 0.24 | ||||||
Total | 1771 | (100.0) | 1360 | (100.0) |