Variables

Daytime workers    (n = 985)

Shift workers

(n = 755)

P  value

Age (years)

41.15 ± 9.4

38.26 ± 10.10

< 0.001

BMI (kg/m²)

25.18 ± 2.99

25.39 ± 3.21

0.155

WC (cm)

84.96 ± 7.75

85.54 ± 8.19

0.116

WBR

3.39 ± 0.22

3.39 ± 0.22

0.694

SBP (mmHg)

122.10 ± 10.98

119.95 ± 10.98

< 0.001

DBP (mmHg)

75.23 ± 8.88

74.05 ± 7.86

0.005

FPG (mg/dL)

100.54 ± 16.17

101.09 ± 13.68

0.301

HDL-C (mg/dL)

53.05 ± 11.51

51.71 ± 10.45

0.074

TG (mg/dL)

141.92 ± 135.10

147.67 ± 107.12

0.538

Cr (mg/dL)

0.92 ± 0.15

0.88 ± 0.12

< 0.001

Serum (OH)2D (ng/mL)

20.61 ± 8.33

21.80 ± 7.73

< 0.001

≥ 20 (%)

451 (45.8)

416 (55.1)

< 0.001

< 20 (%)

534 (54.2)

339 (44.9)

MetS component

1.58 ± 1.36

1.53 ± 1.29

0.647

MetS (%)

0.690

no

742 (75.3)

575 (76.2)

yes

243 (24.7)

180 (23.8)

Season (%)

< 0.001

spring

137 (13.9)

53 (7.0)

summer

345 (35.0)

599 (79.3)

autumn

390 (39.6)

85 (11.3)

winter

113 (11.5)

18 (2.4)

Marital status (%)

< 0.001

single

246 (25.0)

273(36.2)

married

739 (75.0)

482(63.8)

Education level (%)

< 0.001

high school

60 (6.1)

99 (13.1)

college

17 (1.7)

52 (6.9)

university

753 (76.4)

560 (74.2)

graduate school

155 (15.7)

44 (5.8)

Smoking status (%)

< 0.001

no smoker

459 (46.6)

353 (46.8)

former smoker

339 (34.4)

188 (24.9)

current smoker

187 (19.0)

214 (28.3)

Alcohol consumption (%)

< 0.001

≤ once a week

765 (77.7)

654              (86.6)

> once a week

220 (22.3)

101 (13.4)

Exercise (%)

0.019

below recommended PA

705 (71.6)

501 (66.4)

above recommended PA

280 (28.4)

254 (33.6)

Sleep duration (%)

< 0.001

< 5 h

27 (2.7)

13 (1.7)

6-7 h

868 (88.1)

565 (74.8)

8-9 h

90 (9.1)

177 (23.4)