Table 1 Descriptive characteristics of a population-based cohort of male children and young adults <30 years born in Norway during 1951–2015
Variable | Cases | Non-cases | ||
|---|---|---|---|---|
No. | % | No. | % | |
Total = 2686 | 0.1 | 1,971,601 | 99.9 | |
Tumour histology | ||||
Seminoma | 761 | 28.3 | ||
Non-seminoma | 1654 | 61.6 | ||
Unclassified | 271 | 10.1 | ||
Mean age at cancer diagnosis (SD) | ||||
All cases | 24 (4.9) | |||
Seminoma | 26 (3.1) | |||
Non-seminoma | 23 (5.2) | |||
Mother’s education (years) | ||||
<10 | 919 | 34.2 | 267,137 | 28.8 |
10–14 | 1264 | 47.1 | 700,203 | 35.5 |
>14 | 474 | 17.6 | 395,912 | 20.1 |
Missing | 29 | 1.1 | 308,349 | 15.6 |
Father’s education (years) | ||||
<10 | 726 | 27.0 | 475,844 | 24.1 |
10–14 | 1332 | 49.6 | 783,268 | 39.7 |
>14 | 560 | 20.8 | 377,921 | 19.2 |
Missing | 68 | 2.5 | 334,568 | 17.0 |
Mean age at cancer diagnosis of the relatives (SD) | Mean (SD) | Mean (SD) | ||
Father | 668 | 64.1 (12.4) | 338,567 | 66.1 (13.1) |
Mother | 538 | 61.2 (13.9) | 288,954 | 61.7 (14.9) |
Brothers | 166 | 39.7 (16.0) | 64,941 | 47.1 (16.9) |
Sisters | 121 | 43.4 (13.5) | 70,820 | 45.4 (14.3) |
Sons | 14 | 17.6 (8.5) | 5261 | 18.6 (11.5) |
Daughters | 8 | 14.0 (10.8) | 5102 | 20.8 (12.0) |
Paternal uncles | 221 | 59.8 (14.3) | 120,627 | 57.9 (15.3) |
Paternal aunts | 194 | 54.8 (13.5) | 109,509 | 53.2 (14.4) |
Maternal uncles | 240 | 57.3 (13.5) | 107,971 | 56.3 (15.6) |
Maternal aunts | 204 | 54.7 (12.0) | 103,467 | 52.1 (14.4) |
