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Table 2 Characteristics of the study population

From: Recurrent sick leave after COVID-19: investigating the first wave of the pandemic in a comprehensive Swedish registry-based study

Participants, n (%) 11,955 (100.0)
Sex, n (%)
 Men 4826 (40.4)
 Women 7129 (59.6)
Age, mean (SD) 48.0 (11.3)
Country of birth, n (%)a
 Sweden 7545 (63.1)
 European countries except for Sweden 1481 (12.4)
 Countries outside of Europe 2929 (24.5)
Educational level, n (%)b
 Primary school (≤9 years) 1237 (10.4)
 Secondary school (10–12 years) 5889 (49.6)
 Short university education (13–14 years) 1743 (14.7)
 Long university education (≥15 years) 3995 (25.2)
Income, 1000 SEK median (IQR)c 288 (117)
Marital status, n (%)d
 Married 5812 (48.8)
 Single 3859 (32.4)
 Divorced and widow/widower 2246 (18.8)
Sick leave prior to COVID-19, n (%) 1932 (16.2)
Employment status, n (%)e
 Employment 11,460 (95.9)
 Self-employment 288 (2.4)
 Unemployment 204 (1.7)
In-hospital care due to COVID-19, n (%) 2960 (24.8)
  1. Abbreviation: SD standard deviation, IQR interquartile range
  2. a  =  9 missing, b  =  91 missing, c  =  2 missing, d  =  38 missing, e  =  3 missing