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Table 1 The sociodemographic characteristics of the study population

From: The association between Korean workers’ presenteeism and psychosocial factors within workplaces

Characteristics N %
Sex Male 17,812 60.9
Female 11,434 39.1
Age (years) 15–29 5,101 17.4
30–49 17,272 59.1
≥50 6,873 23.5
Smoking Never 15,639 53.5
Quit 3,230 11.0
Current 10,377 35.5
Drinking No 6,184 21.1
≤1/week 15,050 51.5
≥2/week 8,012 27.4
Education Below Middle School 2,750 9.4
High School 10,193 34.9
College and beyond 16,304 55.7
Income (10,000won/month) <100 2,339 8.0
100–199 10,909 37.3
200–299 9,113 31.2
≥300 6,880 23.5
Job type Professional 2,541 8.7
Office 9,467 32.4
Service 7,426 25.4
Manual 9,813 33.6
Employment contract Full time 27,683 94.7
Part time 1,563 5.3
Work schedule Nonshift 26,448 90.4
Shift 2,799 9.6
Working hours/week <35 1,557 5.3
35–45 11,133 38.1
≥45 16,557 56.6