Table 1.
Description of children and malignancies diagnosed before the age of 25 years, reported by parents employed by nuclear authorities. Values are numbers (percentages) of children unless stated otherwise
| Sex of reporting parent
|
||
|---|---|---|
| Male | Female | |
| Total liveborn children | 39 557 | 8883 |
| Median length of follow-up (years)* | 23.0 | 22.7 |
| Year of birth: | ||
| Before 1965 | 13 995 (35) | 2829 (32) |
| 1965-1974 | 9 263 (23) | 2422 (27) |
| 1975-1984 | 8 609 (22) | 1480 (17) |
| 1985-1996 | 7 690 (19) | 2152 (24) |
| Age of child at survey (years): | ||
| <5 | 4 487 (11) | 1297 (15) |
| 5-9 | 4 234 (11) | 1009 (11) |
| 10-14 | 4 456 (11) | 810 (9) |
| 15-19 | 4 034 (10) | 750 (8) |
| 20-24 | 4 265 (11) | 1120 (13) |
| ⩾25 | 18 081 (46) | 3897 (44) |
| Parental monitoring†: | ||
| Never monitored | 8 034 (20) | 6683 (75) |
| Ever monitored | 31 523 (80) | 2200 (25) |
| Monitored before conception | 15 898 (40) | 801 (9) |
| No of malignanciesঠ(No validated): | ||
| All malignancies¶ | 94 (92) | 22 (20) |
| Bone§ | 8 (8) | 2 (2) |
| Testis | 2 (2) | 0 |
| Central nervous system§ | 17 (17) | 7 (7) |
| Hodgkin’s disease§ | 14 (13) | 3 (3) |
| Non-Hodgkin’s lymphoma§ | 6 (6) | 2 (1) |
| Leukaemia | 22 (22) | 6 (5) |
| All other malignancies§ | 25 (24) | 2 (2) |
Up to the child’s 25th birthday, death, or time of survey.
Monitoring of parent at any time up to the child’s 25th birthday, death, or time of survey (including before birth or conception).
ICD-9 codes: all malignancies (1400-2089, 2250, 2375, 2396); bone (1700-1709); testis (1860-1869); central nervous system (1910-1929, 1943-1944, 2250, 2375, 2396); Hodgkin’s disease (2010-2019); non-Hodgkin’s lymphoma (2000-2008, 2020-2022, 2024,2026-2029, 2040-2089); leukaemia (2040-2089).
Five children had both a father and mother in the survey. To preserve confidentiality, site specific data are shown only where there were two or more reports.
Includes one child with both father and mother in the survey population.