Table 1.

Distribution of subjects in the cohort by age at first test, sex, duration of follow-up, cancer frequency, and frequency of CAs.

						Median (25th–75th percentiles)
Occupational exposure	No. of subjects	Mean age at first test (years)	Sex (% males)	Mean years since test	Cancer cases (%)	CAs	CTAs	CSAs
Ionizing radiation	676	40.3	70.4	11.6	57 (8.4)	2.5 (1.5–4.0)	2.0 (1.0–3.0)	1.0 (0.0–2.0)
Cytostatic drugs	2,150	36.5	12.8	7.4	61 (2.8)	2.0 (1.0–3.0)	1.3 (1.0–2.0)	0.0 (0.0–1.0)
Polyclic aromatic hydrocarbons	2,241	39.4	86.1	10.1	108 (4.8)	2.0 (1.0–3.5)	1.5 (1.0–2.4)	1.0 (0.0–1.0)
Aromatic amines	851	40.3	57.8	9.0	28 (3.3)	2.0 (1.3–3.0)	1.8 (1.0–3.0)	0.6 (0.0–1.0)
Other exposures	4,031	38.0	58.7	10.7	170 (4.2)	2.0 (1.0–3.0)	1.0 (1.0–2.0)	0.5 (0.0–1.0)
Nonexposed	1,913	36.2	55.2	8.8	61 (3.2)	2.0 (1.0–3.0)	1.0 (0.5–2.0)	0.0 (0.0–1.0)
Total cohort	11,862	38.0	55.6	9.6	485 (4.1)	2.0 (1.0–3.0)	1.0 (1.0–2.0)	0.5 (0.0–1.0)