Table 2. A summary of risk estimates for non-Hodgkin's lymphoma (NHL) in semiconductor industry.

Population	Measure	Attributes	Risk estimates (95% CI)	Source
Mortality
US IBM	SMR	Total	99 (82–119)	Beall et al.50
		Employed for 5+ years	125 (98–158)
		Employed for 10+ years	122 (88–165)
	PMR	Males	150 (137–166)	Clapp53
		Females	140 (111–176)
	PCMR	Males	136 (123–149)
		Males, manufacturing	126 (98–163)
		Females	122 (97–154)
		Females, manufacturing	144 (86–240)
US SIA	SMR	Total	69 (48–97)	Boice et al.52
		Non-fab workers	61 (37–95)
		Fabrication workers	86 (47–144)
Korea	SMR	Males	133 (43–309)	Lee et al.15
		Females	250 (8–640)
Incidence
US IBM	SIR	East Fishkill, total	94 (74–118)	Bender et al.51
		East Fishkill, employed for 5+ years	98 (69–136)
		East Fishkill, unexposed	80 (43–137)
		East Fishkill, exposed	100 (76–128)
		East Fishkill, exposed for 5+ years	109 (72–157)
		San Jose, total	91 (69–117)
		San Jose, employed for 5+ years	110 (76–154)
		San Jose, unexposed	116 (77–168)
		San Jose, exposed	74 (50–106)
		San Jose, exposed for 5+ years	84 (46–141)
Korea	SIR	Males	93 (45–171)	Lee et al.15
		Females	231 (123–395)

SMR: standardized mortality ratio; SIR: standardized incidence ratio; PMR: proportionate mortality ratio; PCMR: proportionate cancer mortality ratio; CI: confidence interval.