Table 1. Characteristics of respondents and non-respondents.
| Respondents (N=2066) | Non-respondents (N=1008) | ||
|---|---|---|---|
| Characteristics | N (%) | N (%) | P-valuea |
| Sex | <0.001 | ||
| Women | 1008 (48.8) | 376 (37.3) | |
| Men | 1058 (51.2) | 632 (62.7) | |
| Year of diagnosis | <0.001 | ||
| <1970 | 361 (17.5) | 101 (10.0) | |
| 1970–1979 | 800 (38.7) | 311 (30.9) | |
| 1980–1989 | 836 (40.5) | 444 (44.0) | |
| ⩾1990 | 69 (3.3) | 152 (15.1) | |
| Age at first cancer (years) | 0.231 | ||
| 0–4 | 993 (48.1) | 470 (46.6) | |
| 5–9 | 527 (25.5) | 286 (28.4) | |
| 10+ | 546 (26.4) | 252 (25.0) | |
| Childhood cancer group | <0.001 | ||
| Leukaemia | 158 (7.6) | 199 (19.7) | |
| Nephroblastoma | 441 (21.3) | 117 (11.6) | |
| Neuroblastoma | 258 (12.5) | 110 (10.9) | |
| Hodgkin's lymphoma | 126 (6.1) | 48 (4.8) | |
| Non-Hodgkin's lymphoma | 229 (11.1) | 124 (12.3) | |
| Bone or soft tissue sarcoma | 377 (18.2) | 144 (14.3) | |
| CNS tumour | 203 (9.8) | 131 (13.0) | |
| Other solid cancerb | 274 (13.3) | 135 (13.4) | |
| Treatment | <0.001 | ||
| Chemotherapy and radiotherapy | 1085 (52.5) | 442 (43.8) | |
| Chemotherapy only | 524 (25.4) | 311 (30.9) | |
| Radiotherapy only | 314 (15.2) | 139 (13.8) | |
| No radiotherapy, nor chemotherapy | 143 (6.9) | 116 (11.5) | |
| Year of birth | <0.001 | ||
| 1939–1969 | 808 (39.1) | 287 (28.5) | |
| 1970–1974 | 510 (24.7) | 157 (15.6) | |
| 1975–1979 | 490 (23.7) | 209 (20.7) | |
| 1980–1988 | 258 (12.5) | 355 (35.2) |
Abbreviation: CNS=central nervous system.
a
P-values of χ2-tests comparing the distribution of characteristics between respondents and non-respondents.
b
Retinoblastoma, gonadal tumour, thyroid tumour and other types of carcinoma.