Table 3. Rate ratio (RR) for survivors of childhood cancer attaining different educational levels, regardless of previous educational level, in comparison with the control cohort, by sex and diagnostic group.

	Men					Women
Educational level	No. of eligible in each categorya	Persons who completed education (%)	Median age at completion (years)	RRb (95% CI)	P-value	No. of eligible in each categorya	Persons who completed education (%)	Median age at completion (years)	RRb (95% CI)	P-value
Level 1: Basic school
Controls	23 644	98	15.1	1		16 657	99	15.0	1
Non-CNS tumours	355	92	15.0	0.97 (0.87–1.08)	NS	277	97	15.0	0.98 (0.86–1.10)	NS
CNS tumours	128	88	15.2	0.80 (0.66–0.96)	0.02	107	87	15.2	0.66 (0.54–0.81)	0.0001
Level 2: Youth education
Overall
Controls	27 629	72	19.2	1		19 413	77	18.9	1
Non-CNS tumours	510	65	19.2	0.94 (0.84–1.05)	NS	429	69	18.9	0.85 (0.76–0.95)	0.005
CNS tumours	207	45	19.6	0.45 (0.37–0.55)	0.0001	172	42	18.9	0.40 (0.32–0.51)	0.0001
Upper secondary school
Controls	27 629	34	18.5	1		19 413	51	18.5	1
Non-CNS tumours	510	34	18.7	1.11 (0.96–1.28)	NS	429	48	18.5	0.92 (0.80–1.06)	NS
CNS tumours	207	21	18.8	0.48 (0.36–0.65)	0.0001	172	29	18.7	0.49 (0.37–0.64)	0.0001
Vocational education
Controls	27 629	41	20.2	1		19 413	33	20.5	1
Non-CNS tumours	510	34	20.4	0.84 (0.72–0.97)	0.02	429	28	20.8	0.89 (0.75–1.07)	NS
CNS tumours	207	28	20.4	0.68 (0.53–0.88)	0.004	172	19	20.9	0.56 (0.39–0.79)	0.001
Level 3: Higher education
Overall
Controls	29 460	16	24.3	1		20 783	21	24.4	1
Non-CNS tumours	692	19	24.0	1.29 (1.09–1.54)	0.004	532	18	24.5	0.82 (0.67–1.01)	0.06
CNS tumours	264	13	24.7	0.77 (0.55–1.07)	NS	208	12	24.3	0.55 (0.37–0.82)	0.003
Short-cycle
Controls	29 460	5	23.4	1		20 783	4	22.7	1
Non-CNS tumours	692	5	23.4	1.22 (0.88–1.70)	NS	532	3	23.0	0.90 (0.57–1.44)	NS
CNS tumours	264	6	24.6	1.38 (0.85–2.27)	NS	208	1	22.8	0.40 (0.13–1.22)	NS
Medium-cycle
Controls	29 456	10	24.2	1		20 895	17	24.6	1
Non-CNS tumours	904	11	24.3	1.22 (1.00–1.48)	0.05	657	15	25.0	0.87 (0.71–1.06)	NS
CNS tumours	293	7	24.7	0.63 (0.41–0.98)	0.03	231	10	24.3	0.64 (0.43–0.95)	0.03
Long-cycle
Controls	27 788	5	26.1	1		19 758	5	26.4	1
Non-CNS tumours	846	5	26.0	1.12 (0.83–1.49)	NS	619	3	26.5	0.55 (0.35–0.88)	0.01
CNS tumours	273	4	25.9	0.56 (0.30–1.04)	0.07	214	4	26.9	0.89 (0.44–1.79)	NS

CI=confidence interval; NS=not significant at 5% level.

^aNumber of persons in each cohort who met the restrictions on year of birth and age at diagnosis, as described in Materials and Methods section.

^bAdjusted for current age, birth cohort, mean parental income, parents' highest educational level, number of siblings, type of family of child at age 15 and father's degree of unemployment.