Table 4.

Associations between lung cancer risk and exposure measured as continuous variables

	No lag				10-Year lag
	Coefficient	OR*	95% CI	p Value	Coefficient	OR	95% CI	p Value
All workers (356 cases, 941 controls)
Cumulative exposure: 1 mg/m3-year	−0.0100	0.99	0.95 to 1.03	0.641	−0.0120	0.99	0.94 to 1.03	0.598
Log transformed cumulative exposure: 1 ln(mg/m3-years)	0.0518	1.05	0.97 to 1.14	0.208	0.0319	1.03	0.96 to 1.11	0.388
Net duration of employment: 10 years	0.0123	1.01	0.93 to 1.10	0.771	0.0203	1.02	0.93 to 1.12	0.671
Average exposure: 0.10 mg/m3	−0.0207	0.98	0.83 to 1.16	0.809	−0.0092	0.99	0.85 to 1.16	0.907
Workers born before 1920 (189 cases, 497 controls)
Cumulative exposure: 1 mg/m3-year	−0.0176	0.98	0.94 to 1.03	0.450	−0.0182	0.98	0.94 to 1.03	0.444
Log transformed cumulative exposure: 1 ln(mg/m3-years)	0.0407	1.04	0.93 to 1.16	0.466	0.0246	1.03	0.94 to 1.12	0.591
Net duration of employment: 10 years	−0.0648	0.94	0.84 to 1.05	0.266	−0.0062	0.94	0.83 to 1.06	0.331
Average exposure: 0.10 mg/m3	−0.0159	0.98	0.82 to 1.18	0.860	0.0062	1.01	0.86 to 1.18	0.939
Workers born in or after 1920 (167 cases, 444 controls)
Cumulative exposure: 1 mg/m3-year	0.0420	1.04	0.93 to 1.17	0.484	0.0838	1.09	0.91 to 1.30	0.362
Log transformed cumulative exposure: 1 ln(mg/m3-years)	0.0646	1.07	0.95 to 1.20	0.285	0.0433	1.04	0.93 to 1.17	0.456
Net duration of employment: 10 years	0.0962	1.10	0.98 to 1.24	0.114	0.1260	1.13	0.98 to 1.30	0.082
Average exposure: 0.10 mg/m3	−0.0566	0.95	0.58 to 1.54	0.821	−0.2220	0.80	0.44 to 1.45	0.465

^*OR per specified units of increase in exposure.