Duke University Press

Table 1

Distribution of the study population and the prevalence (%) of secondary and tertiary education at age 27 by background factors

	Full Sample (n = 352,899)			Sibling Sample (n = 163,430)
		Education at Age 27 at Least (%)			Education at Age 27 at Least (%)
Covariate^a	%^d	Secondary	Tertiary	%^d	Secondary	Tertiary
Somatic Condition
No	91.9	90.4	35.0	92.2	90.9	35.3
Yes	8.1	87.9	31.2	7.8	88.6	32.0
Frequent Infections
No	90.9	90.3	34.8	91.8	90.8	35.1
Yes	9.1	89.0	33.6	8.2	89.6	34.5
Mental Disorder
No	94.3	91.3	35.7	94.8	91.7	36.1
Yes	5.7	72.1	17.1	5.2	73.0	17.3
Sex
Male	51.1	88.1	26.8	51.1	88.6	27.1
Female	48.9	92.3	42.9	48.9	92.8	43.4
Birth Year
1986	16.2	89.1	35.0	15.3	90.1	36.9
1987	15.9	90.0	35.4	15.3	90.8	36.8
1988	16.8	89.8	34.9	18.0	90.3	35.5
1989	16.8	90.3	34.6	18.4	90.7	35.0
1990	17.2	90.7	34.0	16.7	90.8	33.5
1991	17.1	91.1	34.1	16.3	91.4	33.0
Maternal Age (continuous)	29.0			28.4
Maternal Age (continuous)	(5.2)			(4.7)
Mother Tongue
Finnish	93.9	90.2	34.4	94.0	90.8	34.9
Swedish	4.8	93.5	44.0	4.7	93.9	43.9
Other	1.4	76.0	21.7	1.3	74.1	17.6
Parental Education
Tertiary	50.4	94.6	46.9	52.6	94.8	47.0
Secondary	42.8	87.2	23.5	41.9	87.7	23.1
Basic	6.8	76.0	14.1	5.6	74.3	12.3
Family Type^b
Two parents	82.3	91.8	37.0	85.0	92.1	37.1
Mother only	15.3	83.0	24.2	12.8	83.2	24.1
Father only	2.4	81.6	21.8	2.2	81.4	22.4
Sibship Size (continuous)^b	2.8			3.3
Sibship Size (continuous)^b	(1.5)			(1.8)
Urban-Rural Classification^b,c
Inner-urban	18.9	88.0	36.6	16.7	88.3	37.5
Outer-urban	29.5	90.0	36.1	28.5	90.5	37.0
Peri-urban	12.8	90.8	33.9	13.6	91.3	34.2
Local centers in rural areas	6.2	90.8	35.3	5.9	91.1	35.8
Rural areas close to urban	9.2	90.2	31.4	10.0	90.8	31.9
Rural heartland	15.0	91.7	34.1	16.0	92.2	34.4
Sparsely populated rural	8.4	91.2	30.4	9.3	91.7	30.5
Total	100.0	90.2	34.7	100.0	90.7	35.1

	Full Sample (n = 352,899)			Sibling Sample (n = 163,430)
		Education at Age 27 at Least (%)			Education at Age 27 at Least (%)
Covariate^a	%^d	Secondary	Tertiary	%^d	Secondary	Tertiary
Somatic Condition
No	91.9	90.4	35.0	92.2	90.9	35.3
Yes	8.1	87.9	31.2	7.8	88.6	32.0
Frequent Infections
No	90.9	90.3	34.8	91.8	90.8	35.1
Yes	9.1	89.0	33.6	8.2	89.6	34.5
Mental Disorder
No	94.3	91.3	35.7	94.8	91.7	36.1
Yes	5.7	72.1	17.1	5.2	73.0	17.3
Sex
Male	51.1	88.1	26.8	51.1	88.6	27.1
Female	48.9	92.3	42.9	48.9	92.8	43.4
Birth Year
1986	16.2	89.1	35.0	15.3	90.1	36.9
1987	15.9	90.0	35.4	15.3	90.8	36.8
1988	16.8	89.8	34.9	18.0	90.3	35.5
1989	16.8	90.3	34.6	18.4	90.7	35.0
1990	17.2	90.7	34.0	16.7	90.8	33.5
1991	17.1	91.1	34.1	16.3	91.4	33.0
Maternal Age (continuous)	29.0			28.4
Maternal Age (continuous)	(5.2)			(4.7)
Mother Tongue
Finnish	93.9	90.2	34.4	94.0	90.8	34.9
Swedish	4.8	93.5	44.0	4.7	93.9	43.9
Other	1.4	76.0	21.7	1.3	74.1	17.6
Parental Education
Tertiary	50.4	94.6	46.9	52.6	94.8	47.0
Secondary	42.8	87.2	23.5	41.9	87.7	23.1
Basic	6.8	76.0	14.1	5.6	74.3	12.3
Family Type^b
Two parents	82.3	91.8	37.0	85.0	92.1	37.1
Mother only	15.3	83.0	24.2	12.8	83.2	24.1
Father only	2.4	81.6	21.8	2.2	81.4	22.4
Sibship Size (continuous)^b	2.8			3.3
Sibship Size (continuous)^b	(1.5)			(1.8)
Urban-Rural Classification^b,c
Inner-urban	18.9	88.0	36.6	16.7	88.3	37.5
Outer-urban	29.5	90.0	36.1	28.5	90.5	37.0
Peri-urban	12.8	90.8	33.9	13.6	91.3	34.2
Local centers in rural areas	6.2	90.8	35.3	5.9	91.1	35.8
Rural areas close to urban	9.2	90.2	31.4	10.0	90.8	31.9
Rural heartland	15.0	91.7	34.1	16.0	92.2	34.4
Sparsely populated rural	8.4	91.2	30.4	9.3	91.7	30.5
Total	100.0	90.2	34.7	100.0	90.7	35.1

^aRegion of residence (mode at ages 10–14) is not shown because of the large number of categories (n = 18).

^bMode at ages 10–14.

^cA nationwide geographical classification system by the Finnish Environmental Institute.

^dThe column presents means and standard deviations (shown in parentheses) for continuous variables.