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Table 1 Characteristics of the study population.

From: Sick-leave track record and other potential predictors of a disability pension. A population based study of 8,218 men and women followed for 16 years

  Disability pensioners Referents   
  Women Men Women Men p < for difference
  Mean or % SD Mean or % SD Mean or % SD Mean or % SD Pension status Sex
No. of subjects 753   745   2.842   3878    
Person years 5072   5201   41846   57250    
Sick leave spells 11442   9453   35553   40712    
Mean follow-up time, years 6.7 4.43 7.0 4.15 12.3 4.48 13.7 3.08 0.0001 0.0001
Sickness spell duration, days           
   Mean 52.6 181.8 65.6 215.2 14.4 60.4 14.8 69.7 0.0001 0.0001
   Median 4   5   3   4   0.0001 0.0001
Sickness spell interval           
   Mean 111.2 235.6 128.4 277.9 198.43 421.8 221.6 451.8 0.0001 0.0001
   Median 44   49   73   83   0.0001 0.0001
Cumulative one-year sick leave days           
   Mean 98.3 126.2 98.4 129.7 11.3 39.3 9.8 37.9 0.0001 0.0001
   Median 32   28   0   0   0.0001 0.0001
Age at baseline 47.5 9.1 47.2 8.0 41.7 13.4 39.5 11.1 0.0001 0.0001
Married, % 75.4   71.0   79.9   81.7   0.0001 n.s.
Mandatory education only, % 61.5   51.2   37.5   29.1   0.0001 0.0001.
Household size 2.7 1.2 2.5 1.2 2.9 1.3 2.9 1.3 ns n.s.
Smokers, % 39.6   44.2   29.8   27.2   0.001 n.s.
  1. Descriptive statistics of the study population.