Table 4. Mortality after childhood cancer diagnosis according to parental educational level; comparison of the effect during the first year after diagnosis and the effect during the following 9 years (conditioned on surviving the first year).
| All diagnoses combined, n=4700 HR (95% CI) | Leukaemia, n=1485 HR (95% CI) | Tumours of the nervous system, n=1390 HR (95% CI) | |
|---|---|---|---|
|
The first year after diagnosis | |||
| Parental educational levela | |||
| Postsecondary | 1 | 1 | 1 |
| Upper secondary | 1.21 (0.94–1.56) | 1.21 (0.74–1.98) | 1.07 (0.74–1.55) |
| Compulsory or less | 1.53 (1.11–2.11) | 1.44 (0.76–2.73) | 1.44 (0.90–2.30) |
|
>1 year after diagnosis | |||
| Parental educational levela | |||
| Postsecondary | 1 | 1 | 1 |
| Upper secondary | 1.14 (0.93–1.40) | 1.33 (0.91–1.94) | 0.92 (0.67–1.28) |
| Compulsory or less | 1.12 (0.85–1.49) | 1.36 (0.82–2.26) | 1.10 (0.71–1.71) |
|
Test of the difference in effect between the two time periods | |||
| P-value | 0.33 | 0.90 | 0.68 |
Abbreviations: CI=confidence interval; HR=hazard ratios. All models are adjusted for sex, year of diagnosis, age at diagnosis, region, and household income.
a
Based on maternal educational level if this was available, otherwise based on paternal educational level.