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Table 1 Description of the data

From: Socio-economic differences in self-reported insomnia and stress in Finland from 1979 to 2002: a population-based repeated cross-sectional survey

  Study periods Total period
  1979–1982 1983–1987* 1988–1992 1993–1997 1998–2002 1979–2002
  % N % N % N % N % N % N
Men             
Insomnia 17 1267 16 950 17 1209 18 1193 20 1289 18 5908
Stress 16 1215 17 1023 19 1325 20 1326 20 1298 19 6187
Age             
25-34 32 2378 30 1760 27 1941 24 1589 21 1329 27 8997
35-44 27 2043 30 1752 30 2148 27 1774 26 1667 28 9384
45-54 23 1723 22 1261 23 1645 28 1843 30 1920 25 8392
55-64 18 1314 19 1102 20 1420 21 1405 23 1479 20 6720
Educational level             
Highest 20 1451 22 1297 25 1790 28 1827 33 2071 25 8436
Intermediate 26 1936 31 1784 35 2500 39 2592 41 2596 34 11408
Lowest 54 4033 47 2744 40 2840 33 2173 27 1712 41 13502
Employment status             
Employed 86 6284 85 4951 82 5870 73 4714 78 4738 81 26557
Student 2 109 1 81 2 155 2 139 2 142 2 626
Retired 10 728 11 655 12 881 13 830 12 739 12 3833
Unemployed 2 174 3 150 3 228 12 756 8 481 5 1789
Total N   7458   5875   7154   6611   6395   33493
  1979–1982 1983–1987* 1988–1992 1993–1997 1998–2002 1979–2002
  % N % N % N % N % N % N
Women             
Insomnia 19 1292 17 1171 17 1372 19 1408 21 1583 19 6826
Stress 12 830 14 925 15 1198 19 1405 18 1356 16 5714
Age             
25-34 30 2025 28 1883 26 2116 25 1889 22 1649 26 9562
35-44 23 1569 27 1834 30 2434 28 2118 27 1985 27 9940
45-54 22 1487 22 1457 23 1881 28 2113 30 2194 25 9132
55-64 26 1766 23 1552 20 1599 20 1501 21 1570 22 7988
Educational level             
Highest 16 1109 22 1467 26 2079 33 2470 37 2759 27 9884
Intermediate 26 1756 31 2069 35 2778 37 2836 39 2870 34 12309
Lowest 58 3966 47 3146 39 3164 30 2302 24 1756 40 14334
Employment status             
Employed 69 4626 74 4942 75 5993 69 5159 73 5193 72 25913
Student 1 84 2 111 3 218 3 253 3 223 3 889
Housewife 16 1098 12 773 9 698 8 597 6 444 10 3610
Retired 12 775 11 718 11 910 10 755 10 721 11 3879
Unemployed 2 146 2 148 2 178 9 676 8 539 5 1687
Total N   6847   6726   8030   7621   7398   36622
  1. Distribution of age, educational level and employment status by different study periods.
  2. * Year 1985 is missing.
  3. ** Household income variable was divided into equal size quintiles, not shown in the table.
  4. Prevalence (%) of self-reported insomnia and stress.