Table 3.

Estimated OR of uveal melanoma associated with the occupational group of cooks in Northrhine-Westphalia (age 35-74 years)

	Population control subjects
	Control subjects, n	Case patients, n	OR (95% CI) *
Northrhine-Westphalia	(n = 344)	(n = 178)
Cooks according to ISCO (5-31.20-5-31.90)
No	333	172	1.0
Yes	10	6	1.4 (0.5-4.0)
Missing	1	0
Male cooks
No	182	92
Yes	3	0	<
Female cooks
No	151	80	1.0
Yes	7	6	1.9 (0.6-6.1)
Missing	1	0
Cooks and duration of job period (years)
Never	334	172	1.0
0,5-2	2	1	1.1 (0.1-12.7)
>2	8	5	1.7 (0.5-5.8)
Cooks according to ISCO (5-31.20-5-31.90) who actually cooked
No	337	174	1.0
Yes	7	4	1.6 (0.4-6.1)
Male cooks
No	182	92
Yes	3	0	<
Female cooks
No	155	82	1.0
Yes	4	4	3.4 (0.6-19.3)
Cooks and duration of job period (years)
Never	337	174	1.0
0,5-2	0	1	<
>2	7	3	1.1 (0.3-4.8)

*OR - odds ratio; conditional logistic regression with matching factors and 95% CI- 95% confidence interval.

Matching factors for the conditional analysis were age (5-year age groups), sex, and geographic area