Table 3.

Standardized mortality ratios for major causes of death in male workers

	Standardized mortality ratio (compared with rates for NW England)
	All non-cancer		Circulatory diseases		Respiratory diseases
	SMR	95% CI	SMR	95% CI	SMR	95% CI
Male industrial employees	85	83.1–86.5	89	86.7–91.0	72	68.9–76.2
Non-radiation workers	85	82.7–88.2	87	83.8–90.8	78	72.0–84.0
External radiation workers	85	82.1–88.6	91	86.8–95.2	69	62.2–75.9
Internal radiation workers	84	80.8–86.5	89	85.4–92.8	69	63.2–75.5
Male non-industrial employees	62	59.5–64.4	70	66.5–73.0	38	33.4–42.8
Non-radiation workers	66	61.5–70.5	75	69.4–81.6	41	33.3–50.4
External radiation workers	62	57.9–65.9	69	63.7–74.6	34	26.7–41.7
Internal radiation workers	58	54.3–62.5	65	59.8–70.8	39	31.3–48.4
All male employees	79	77.3–80.1	84	82.1–85.7	64	61.1–67.0