Table 3. Case–control analysis of subjects with a family history of cancer: association between exposure to diagnostic x-rays and prostate cancer.
| Procedure | Number exposed (total) | Unadjusted OR (95% CI) | Adjusted ORa (95% CI) |
|---|---|---|---|
| Barium meal | |||
| >5 years | 83 (373) | 1.17 (0.71–1.92) | 1.09 (0.66–1.81) |
| >10 years | 71 (361) | 1.18 (0.70–1.99) | 1.08 (0.63–1.86) |
| >20 years | 41 (331) | 0.94 (0.49–1.81) | 0.86 (0.44–1.67) |
| Barium enema | |||
| >5 years | 22 (386) | 1.74 (0.69–4.36) | 1.60 (0.63–4.03) |
| >10 years | 19 (383) | 2.27 (0.80–6.44) | 2.12 (0.74–6.04) |
| >20 years | 6 (370) | 0.81 (0.16–4.07) | 0.68 (0.13–3.45) |
| IVP | |||
| >5 years | 26 (390) | 1.48 (0.64–3.41) | 1.44 (0.62–3.33) |
| >10 years | 18 (382) | 1.23 (0.47–3.25) | 1.19 (0.45–3.16) |
| >20 years | 10 (374) | 1.83 (0.47–7.19) | 1.62 (0.41–6.42) |
| Hip/pelvic x-ray | |||
| >5 years | 30 (299) | 3.46 (1.44–8.34)† | 3.55 (1.46–8.58)† |
| >10 years | 22 (291) | 4.74 (1.56–14.3)† | 5.01 (1.64–15.31)† |
| >20 years | 14 (283) | 13.69 (1.77–106.16)† | 14.23 (1.83–110.74)† |
| Upper leg x-ray | |||
| >5 years | 24 (360) | 0.89 (0.39–2.04) | 0.83 (0.36–1.93) |
| >10 years | 20 (356) | 1.39 (0.54–3.58) | 1.32 (0.51–3.43) |
| >20 years | 18 (354) | 1.50 (0.55–4.09) | 1.46 (0.53–4.02) |
OR=Odds Ratio; CI=Confidence interval.
†
P-value significant.
a
Adjusted for age at diagnosis and social class.