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Table 1 Characteristics of the study population by employment status n (%)

From: Presenteeism among self-employed workers: Korean working conditions survey

  Paid workers Self-employed workers P-value*
Total
Age
 15-29 7387 (21.2) 216 (2.5) <0.001
 30-39 9879 (28.4) 887 (10.3)  
 40-49 9260 (26.6) 2197 (25.5)  
 50-59 5902 (17.0) 2704 (31.4)  
 ≥60 2355 (6.8) 2605 (30.3)  
Sex
 Male 20531 (59.0) 5737 (66.6) <0.001
 Female 14252 (41.0) 2872 (33.4)  
Income (10,000 won/month)
 <100 4263 (12.3) 1566 (18.2) <0.001
 100-199 13703 (39.4) 3008 (34.9)  
 200-299 9728 (28.0) 2389 (27.8)  
 ≥300 7090 (20.4) 1646 (19.1)  
Education
 <Elementary 280 (8.0) 426 (4.9) <0.001
 Elementary school 1127 (3.2) 1035 (12.0)  
 Middle school 2279 (6.6) 1431 (16.6)  
 High school 12762 (36.7) 3867 (44.9)  
 College 6390 (18.4) 820 (9.5)  
 University 10960 (31.5) 958 (11.1)  
 Graduate school 984 (2.8) 73 (0.8)  
Alcohol intake
 Heavy 7891 (22.7) 2642 (30.7) <0.001
 Moderate 5226 (15.0) 1353 (15.7)  
 None 21666 (62.3) 4615 (53.6)  
Smoking
 Never or past 22864 (65.7) 5733 (66.6) 0.133
 Current 11918 (34.3) 2876 (33.4)  
  1. *Calculated using the chi-square test.