Skip to main content

Table 1 Construction of the sample and follow-up time by birth year

From: Socioeconomic status and sick leave granted for mental and somatic disorders: a prospective study of young adult twins

  Chronological time   
Birth year ‘98 ‘99 ‘00 ‘01 ‘02 ‘03 ‘04 ‘05 ‘06 ‘07 ‘08 N linked N employed
1967 + + + + + + + + + + + 697 565
1968 + + + + + + + + + + + 720 548
1969   + + + + + + + + + + 726 580
1970    + + + + + + + + + 657 504
1971     + + + + + + + + 639 512
1972      + + + + + + + 601 475
1973       + + + + + + 622 481
1974        + + + + + 558 439
1975         + + + + 541 423
1976          + + + 532 406
1977           + + 448 350
1978            + 529 434
1979            + 440 350
Total Mean follow up time = 6.57 years 7710 6103
  1. The number of individuals linked to registry and the number of individuals sufficiently employed to be followed. Individuals are followed in the years indicated by ‘+’.