Table 1

Descriptive statistics

Baseline variableNo of participants (%)Sickness absence in 1990–1992
Total no of days (%)Participants (%) with 0 daysParticipants (%) with 1–30 daysParticipants (%) with >30 days
Age, mean (SD)44.8 (3.3)38706645.2 (3.1)44.6 (3.3)44.4 (3.5)
Sex
 Men11185 (73)219133 (57)5373 (48)3902 (35)1910 (17)
 Women4135 (27)167933 (43)998 (24)1662 (40)1475 (36)
Occupational grade
 Higher4552 (30)47352 (12)2727 (60)1391 (31)434 (9.5)
 Intermediate8513 (55)227352 (59)3147 (37)3324 (39)2042 (24)
 Lower2255 (15)112362 (29)497 (22)849 (38)909 (40)
Chronic diseases at baseline
 Asthma, bronchitis763 (5.0)28623 (7.4)233 (31)287 (38)243 (32)
 Ischaemic heart disease, stroke143 (0.9)10457 (2.7)30 (21)43 (30)70 (49)
 Musculoskeletal disorders2285 (14.9)96606 (25.0)664 (29)810 (35)811 (36)
 Cancer71 (0.5)9880 (2.6)11 (16)15 (21)45 (63)
 Depression1228 (8.0)78506 (20.3)264 (22)394 (32)570 (46)
Chronic diseases at the end of follow-up
 Asthma, bronchitis828 (5.4)30995 (8.0)288 (35)280 (34)260 (31)
 Ischaemic heart disease, stroke539 (3.5)21413 (5.5)203 (38)167 (31)169 (31)
 Musculoskeletal disorders3449 (22.5)122679 (31.7)1102 (32)1312 (38)1035 (30)
 Cancer591 (3.9)20569 (5.3)228 (39)207 (35)156 (26)
 Depression1148 (7.5)64282 (16.6)260 (23)396 (34)492 (43)
  • Figures are numbers (percentages), unless otherwise stated.