Table 1

Standardized mortality ratios for selected causes of death among shipyard
workers in the United States
Cause of Death	Standard mortality ratio (95% cl)
Cause of Death	> 5 mSv	<5 mSv	Non-Nuclear radiation workers
All causes	0.76 (0.73, 0.79)	0.81 (0.76, 0.86)	1.00 (0.97, 1.03)
Leukemia	0.91 (0.56, 1.39)	0.42 (0.11, 1.07)	0.97 (0.65, 1.39)
Lymphatic and haemopoietic cancers	0.82 (0.61, 1.08)	0.53 (0.28, 0.91)	1.10 (0.88, 1.37)
Mesothelioma	5.11 (3.03, 8.08)	5.75 (2.48, 11.33)	2.41 (1.16, 4.43)
Lung cancer	1.07 (0.94, 1.21)	1.11 (0.90, 1.35)	1.15 (1.02, 1.29)