Table 1.

Sociodemographic characteristics of men born 1938–57 and women born 1942–61 in the clinical cohort at baseline, the full cohort, and the population in Stockholm County and Sweden in 1992^a

	Clinical cohort	Full cohort	Stockholm County	Sweden
	n = 7949 (%)	n = 34 486 (%)	n b = 479 000 (%)	n b = 2 293 000 (%)
Highest attained education
University (>12 y)	32.5	28.4	35.4	27.0
Upper secondary school 3 yc (12 y)	15.3	15.0	15.3	12.4
Upper secondary school 2 yd (11 y)	33.2	34.2	28.7	33.2
Primary school (9 y)	19.0	22.4	20.6	27.3
	P1 <0.001; P2 <0.001	P1 <0.001; P2 <0.001	P1 <0.001
Occupation
Higher non-manual employees	26.4	22.4	22.2	19.9
Intermediate non-manual employees	22.4	20.8	17.9	15.3
Lower non-manual employees	11.3	12.5	11.6	15.7
Skilled workers	15.6	18.3	16.4	24.2
Unskilled workers	8.3	11.4	13.2	12.0
Other	16.0	14.7	18.7	13.0
	P1 <0.001; P2 <0.001	P1 <0.001; P2 <0.001	P1 <0.001
Income, quintilese
5 (highest)	28.8	26.1	29.4	20.0
4	22.4	21.3	20.5	20.0
3	19.2	19.0	18.5	20.0
2	16.8	17.5	15.8	20.0
1 (lowest)	12.9	16.1	15.9	20.0
	P1 <0.001; P2 <0.001	P1 <0.001; P2 <0.001	P1 <0.001
Birth country
Sweden	100	85.0	79.9	88.2
	P1 <0.001; P2 <0.001	P1 <0.001; P2 <0.001	P1 <0.001

y, years.

^aData from integrated database for labour market research 1992.

^bAge- and sex-matched samples according to the Stockholm Diabetes Prevention Programme (SDPP) municipalities distributions.

^c3 years of upper secondary school are required for university studies in Sweden.

^d2 years of upper secondary school gave vocational qualifications in Sweden until the 90 s.

^eIncome quintiles according to age- and sex-matched samples from the Swedish total population in 1992.

P1 = P-value compared with Sweden; P2 = P-value compared with Stockholm County.