Case–control associations between occupation at case diagnosis and TGCT
| Cases (N=530) | Controls (N=530) | ||
| Occupation (AFSC) | N | N | OR (95% CI) |
| Aircrew operations (1A) | 14 | 23 | 0.67 (0.34–1.35) |
| Command and control systems operations (1C) | 17 | 14 | 1.22 (0.60–2.49) |
| Aerospace maintenance (2A) | 103 | 93 | 1.12 (0.82–1.54) |
| Fuels (2F) | 11 | 9 | 1.32 (0.54–3.22) |
| Material management (2S) | 11 | 11 | 1.01 (0.43–2.35) |
| Transportation (2T) | 20 | 23 | 0.93 (0.50–1.73) |
| Munitions and weapons (2W) | 27 | 34 | 0.77 (0.45–1.32) |
| Communication-electronics/wire systems maintenance (2E) | 12 | 22 | 0.56 (0.27–1.13) |
| Communications/network (3C) | 11 | 10 | 1.07 (0.43–2.64) |
| Cyberspace support (3D) | 23 | 18 | 1.35 (0.70–2.61) |
| Security forces (3P) | 39 | 38 | 1.08 (0.67–1.73) |
| Fire protection (3E7×1) | 12 | 6 | 1.94 (0.72–5.20) |
| Aerospace medical/surgical service (4N) | 9 | 17 | 0.52 (0.23–1.17) |
| Pilot (11) | 36 | 23 | 1.72 (0.98–3.02) |
| Fixed-wing pilot (11A, 11K, 11M, 11R, 11S, 11T) | 20 | 17 | 1.22 (0.63–2.39) |
| Fighter pilot (11F) | 13 | 5 | 2.73 (0.96–7.72) |
| Pilot trainee (92T0) | 10 | 5 | 1.77 (0.53–5.88) |
| Pilot/pilot trainee (11, 92T0) | 46 | 28 | 1.78 (1.06–3.01) |
| Space, nuclear and missile (13) | 10 | 12 | 0.89 (0.38–2.07) |
| Civil engineer (3E, 32E)* | 38 | 36 | 1.07 (0.67–1.72) |
| Intelligence (1N, 14N)* | 19 | 30 | 0.61 (0.34–1.11) |
| Occupational group based on job description (AFSC) | |||
| Aircraft maintenance (2A, 21A)* | 69 | 47 | 1.54 (1.04–2.29) |
| Aircraft crew (12, 13, 1A, 2A)* | 24 | 40 | 0.60 (0.35–1.04) |
| Ammunition (3E, 2W) | 30 | 34 | 0.88 (0.53–1.46) |
| Fuels/petroleum (2A, 2F, 63)* | 15 | 12 | 1.42 (0.66–3.08) |
| Electrical/electronics (2A, 2E, 2P, 3D, 3E) | 22 | 32 | 0.62 (0.34–1.12) |
| Mechanic/other maintenance (2A, 2E, 2M, 2T, 3E, 4A) | 21 | 29 | 0.65 (0.36–1.20) |
| Law enforcement/security (3P, 31P, 81)* | 42 | 39 | 1.20 (0.76–1.91) |
| Radio/communications/radar (1C, 2A, 2E, 3C, 3D, 33S)* | 24 | 23 | 1.04 (0.57–1.87) |
| Medical*† | 35 | 31 | 1.13 (0.69–1.94) |
| Administrative/support*‡ | 139 | 137 | 0.99 (0.75–1.33) |
| Miscellaneous/other/unknown*§ | 44 | 56 | 0.78 (0.50–1.20) |
All conditional logistic regression models adjusted for number of deployments before case diagnosis (0, 1, 2+).
Bold indicative of statistical significance.
Comparison (non-exposed) group is everyone not in selected occupation/occupational group.
*Models additionally adjusted for grade at case diagnosis.
†Medical AFSCs: 42, 44, 45, 46, 47, 48, 4C, 4D, 4F, 4N, 4P, 4R, 4Y, 92M1.
‡Administrative/support AFSCs: 13, 16, 17, 18, 20, 21, 27, 43, 51, 60, 62, 63, 64, 65, 97, 10C, 14N, 1C, 1N, 1W, 21R, 2E, 2G, 2R, 2S, 2T, 32E, 33S, 34M, 36M, 36P, 38F, 38P, 3A, 3C, 3D, 3M, 3N, 3S, 3V, 41A, 4A, 4E, 52R, 5R, 6C, 6F, 7S, 8R, 8M000, 9E.
§Miscellaneous/other/unknown AFSCs: 45, 61, 62, 15W, 1C, 1P, 1S, 1T, 1U, 2A, 2E, 2T, 2W, 3E, 4B, 8F, 9S, 90G0, 9T000.
AFSC, Air Force Specialty Code; TGCT, testicular germ cell tumour.