Table 1 The demographic variables of participants

Sex

Women

1,314

81.36

Men

301

18.64

Age (years)

1,615

38.22 ± 10.20

Education

Below high school

81

5.02

Bachelor’s degree

1,237

76.59

Master’s degree

243

15.05

PhD

54

3.34

Marital status

married

779

48.24

other

836

51.76

Raising children

without children

912

56.51

one child

228

14.13

two children

390

24.16

three children

80

4.96

over three children

5

0.25

Exercise habit

at least once per day

154

9.54

at least once weekly

779

48.24

at least once per month

286

17.71

less than once per month

302

18.70

Never

94

5.82

Alcohol use habit

alcohol use every day

8

0.50

alcohol use occasionally

601

37.21

alcohol use never

1,006

62.29

Sleeping duration

< 5 h

63

3.90

5–6 h

563

34.86

6–7 h

719

44.52

7–8 h

232

14.37

> 8 h

38

2.35

Overtime work per month

seldom

1,054

65.26

less than 45 h per month

502

31.08

45–80 h per month

54

3.34

more than 80 h per month

5

0.31

Shift schedules

day shift work

1,061

65.70

night shift work

166

10.28

irregular shift work

192

11.89

regular shift work

196

12.14

Profession

physicians

138

8.54

nurses

613

37.96

professional and technical personnel

283

17.52

administrative staff

581

35.98

The presence of one or more chronic diseases

Yes

638

39.50

No

977

60.50

Engaging in leisure activities with family and friends during vacation time?

always

102

6.32

often

498

30.84

sometimes

765

47.37

seldom

238

14.74

never

12

0.74

Commuting time (minutes)

5–10

346

21.42

10–20

541

33.50

20–30

319

19.75

30–40

169

10.46

40–50

100

6.19

> 50

140

8.67

The most-used commuter transportation

Walking

392

24.27

Bicycle

66

4.09

Bus or MRT

178

11.02

Train

144

8.92

Private vehicle

527

32.63

Motorcycle

1,277

79.07