Table 5 Age adjusted relative risk for BCC, all and of trunk, by employment years, cumulative air hours, cumulative mSv, and cumulative mSv up to age of 40 years
From: Incidence of cancer among licenced commercial pilots flying North Atlantic routes
Basal cell carcinoma of skin, all (C44)a | Basal cell carcinoma of skin, of trunk (C44)a | |||||
|---|---|---|---|---|---|---|
Exposure | No | Yes | No | Yes | ||
metrics | n = 520 | n = 31 | RR (95% CI) | n = 540 | n = 11 | RR (95% CI) |
Employment years | ||||||
Unexposed | 256 | 9 | 1.00 (Referent) | 263 | 2 | 1.00 (Referent) |
<15 | 127 | 5 | 2.95 (0.70 to 12.74) | 130 | 2 | 4.29 (0.35 to 65.08) |
15+ | 137 | 17 | 3.34 (1.51 to 7.89) | 147 | 7 | 6.07 (1.46 to 40.86) |
p-trend | 0.002 | 0.01 | ||||
Cumulative air hours | ||||||
Unexposed | 232 | 33 | 1.00 (Referent) | 253 | 12 | 1.00 (Referent) |
<10,000 | 163 | 7 | 1.40 (0.49 to 3.73) | 170 | 0 | − |
10,000+ | 79 | 37 | 2.41 (1.50 to 3.90) | 101 | 15 | 2.61 (1.22 to 5.60) |
p-trend | 0.0003 | 0.002 | ||||
Cumulative mSv | ||||||
Unexposed | 256 | 9 | 1.00 (Referent) | 263 | 2 | 1.00 (Referent) |
<25 | 146 | 5 | 1.92 (0.49 to 7.23) | 149 | 2 | 2.75 (0.25 to 33.24) |
25+ | 118 | 17 | 3.61 (1.64 to 8.48) | 128 | 7 | 6.65 (1.61 to 44.64) |
p-trend | 0.0005 | 0.005 | ||||
Cumulative mSv up to age of 40 years | ||||||
Unexposed | 256 | 9 | 1.00 (Referent) | 263 | 2 | 1.00 (Referent) |
<5 | 122 | 3 | 1.37 (0.27 to 5.74) | 123 | 2 | 4.51 (0.40 to 54.67) |
5+ | 142 | 19 | 3.62 (1.68 to 8.45) | 154 | 7 | 6.08 (1.46 to 41.06) |
p-trend | 0.0006 | 0.01 | ||||