Table 3

 Hazard ratios (HR) including 95% CI for selected neoplastic causes of death, ordered by decreasing exposure of occupation (highest exposure: Alpine train drivers, lowest exposure (reference): station masters)

OutcomeAlpine train drivers HR (95% CI)Lowland train drivers HR (95% CI)Shunting yard engineers HR (95% CI)Train attendants HR (95% CI)Station masters (ref.) HRTest for trend† p Value
*No cases.
†Mantel–Cox score test for trends.
All-cause mortality1.01 (0.87 to 1.17)1.02 (0.95 to 1.10)1.12 (1.00 to 1.26)1.13 (1.05 to 1.21)10.787
Tumour, all1.25 (0.99 to 1.58)1.04 (0.91 to 1.18)1.06 (0.87 to 1.29)1.03 (0.91 to 1.17)10.119
Respiratory tumour1.04 (0.60 to 1.80)0.98 (0.73 to 1.31)1.05 (0.70 to 1.60)1.11 (0.85 to 1.44)10.865
Haematopoietic and lymphatic malignancies1.46 (0.70 to 3.02)1.12 (0.73 to 1.73)1.44 (0.81 to 2.57)0.95 (0.62 to 1.45)10.250
    Hodgkin’s disease3.32 (0.30 to 36.89)3.28 (0.68 to 15.97)1.50 (0.13 to 16.78)1.51 (0.27 to 8.32)10.062
    Non-Hodgkin’s disease1.68 (0.47 to 6.03)0.80 (0.34 to 1.87)1.49 (0.56 to 4.00)0.87 (0.40 to 1.88)10.947
    Leukaemia0.87 (0.20 to 3.83)1.52 (0.78 to 2.97)1.49 (0.57 to 3.92)1.07 (0.54 to 2.11)10.280
        Lymphoid leukaemia–*0.68 (0.28 to 1.62)1.27 (0.40 to 4.02)0.58 (0.26 to 1.34)10.263
        Myeloid leukaemia6.44 (0.90 to 45.95)4.46 (0.95 to 20.89)3.08 (0.43 to 22.05)3.07 (0.65 to 14.57)10.035
Brain tumour–*0.64 (0.23 to 1.79)1.54 (0.52 to 4.54)1.28 (0.58 to 2.86)10.130