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Table 1 General and occupational characteristics of study participants*

From: Night shift work and inflammatory markers in male workers aged 20–39 in a display manufacturing company

Variables

Work schedule group (n = 244)

p-value

Daytime

(n = 112)

Former shift

(n = 46)

Current shift

(n = 86)

Age (years)

32.2 ± 4.3

32.9 ± 2.9

33.3 ± 3.5

0.091

Marital status

 Married

62(55.4)

28(60.9)

57(66.3)

0.296

 Other

50(44.6)

18(39.1)

29(33.7)

Education level (years)

  ≤ 12

8(7.1)

9(19.6)

22(25.6)

0.002

  > 12

104(92.9)

37(80.4)

64(74.4)

Alcohol consumption

 Non-Drinker

23(20.5)

6(13.0)

18(20.9)

0.493

 Drinker

89(79.5)

40(87.0)

68(79.1)

Smoking

 No

100(89.3)

37(80.4)

64(74.4)

0.023

 Yes

12(10.7)

9(19.6)

22(25.6)

Regular exercise

 No

9(8.0)

5(10.9)

11(12.8)

0.543

 Yes

103(92.0)

41(89.1)

75(87.2)

Sleep duration (hours/day)

6.33 ± 0.92

6.25 ± 1.04

6.47 ± 0.93

0.381

Sleep debt (hours/day)

1.21a ± 0.93

1.39 ± 0.91

1.56a ± 1.01

0.037

Sleep insufficiency (days/week)

1.47a ± 1.43

1.81 ± 1.75

2.07a ± 1.43

0.019

Weekly work hours

  < 48

25(22.3)

12(26.1)

13(15.1)

0.267

  ≥ 48

87(77.7)

34(73.9)

73(84.9)

  1. *values are mean ± standard deviation or number(%)
  2. compared using chi-square test or one-way analysis of variance
  3. asame letters indicate statistical significance