Table 1

Frequency of economically active periods for cases and controls for whole study sample and for seminoma and non-seminoma

Study group/number of job periods	Number of cases	Per cent	Number of controls	Per cent
Complete study sample	266	100.0	797	100.0
0	7	2.6	20	2.5
1–2	79	29.7	213	26.7
3–4	112	42.1	321	40.3
5+	68	25.6	243	30.5
Seminoma	167	100.0	725	100.0
0	1	0.6	13	1.8
1–2	42	25.2	192	26.5
3–4	72	43.1	299	41.2
5+	52	31.1	221	30.5
Non-seminoma	99	100.0	682	100.0
0	6	6.1	20	2.9
1–2	37	37.4	193	28.3
3–4	40	40.4	274	40.2
5+	16	16.2	195	28.6