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Table 1 General characteristics of the subjects (N (%))

From: The association between long working hours and the metabolic syndrome: evidences from the 5th Korean National Health and Nutrition Examination Survey of 2010 and 2012

Characteristics

Male (n = 2475)

Female (n = 1981)

N (%)

Working hours per week

p

N (%)

Working hours per week

p

30-39 (n = 239)

40-48 (n = 1180)

49-59 (n = 614)

≥60 (n = 442)

30-39 (n = 423)

40-48 (n = 1025)

49-59 (n = 337)

≥60 (n = 196)

Age (years)

            

  16-29

327 (13.2)

30 (12.6)

142 (12.0)

85 (13.8)

70 (15.8)

<0.001†

468 (23.6)

88 (20.8)

234 (22.8)

101 (30.0)

45 (23.0)

<0.001†

  30-39

799 (32.3)

54 (22.6)

370 (31.4)

231 (37.6)

144 (32.6)

 

476 (24.0)

82 (19.4)

302 (29.5)

67 (19.9)

25 (12.8)

 

  40-49

686 (27.7)

48 (20.1)

344 (29.2)

168 (27.4)

126 (28.5)

 

487 (24.6)

103 (24.3)

263 (25.7)

77 (22.8)

44 (22.4)

 

  50-59

445 (18.0)

57 (23.8)

217 (18.4)

102 (16.6)

69 (15.6)

 

359 (18.1)

86 (20.3)

157 (15.3)

58 (17.2)

58 (29.6)

 

  ≥60

218 (8.8)

50 (20.9)

107 (9.1)

28 (4.6)

33 (7.5)

 

191 (9.6)

64 (15.1)

69 (6.7)

34 (10.1)

24 (12.2)

 

  Mean (SD)

42.3 (11.7)

46.3 (14.4)

42.6 (11.4)

40.8 (10.5)

41.2 (11.8)

<0.001‡

41.3 (13.0)

43.5 (14.3)

40.1 (11.8)

40.4 (13.6)

44.5 (13.5)

<0.001‡

Smoking

            

  Yes

1135 (45.9)

115 (48.1)

501 (42.5)

300 (48.9)

219 (49.5)

0.014†

139 (7.0)

20 (4.7)

63 (6.1)

39 (11.6)

17 (8.7)

0.001†

  No

1340 (54.1)

124 (51.9)

679 (57.5)

314 (51.1)

223 (50.5)

 

1842 (93.0)

403 (95.3)

962 (93.9)

298 (88.4)

179 (91.3)

 

Drinking*

            

  ≤7

1119 (45.2)

117 (49.0)

543 (46.0)

255 (41.5)

204 (46.2)

0.159†

1642 (82.9)

367 (86.8)

845 (82.4)

269 (79.8)

161 (82.1)

0.074†

  ≥8

1356 (54.8)

122 (51.0)

637 (54.0)

359 (58.5)

238 (53.8)

 

339 (17.1)

56 (13.2)

180 (17.6)

68 (20.2)

35 (17.9)

 

Exercise

            

  Yes

2266 (91.6)

215 (90.0)

1095 (92.8)

562 (91.5)

394 (89.1)

0.091†

1754 (88.5)

378 (89.4)

916 (89.4)

294 (87.2)

116 (84.7)

0.222†

  No

209 (8.4)

24 (10.0)

85 (7.2)

52 (8.5)

48 (10.9)

 

227 (11.5)

45 (10.6)

109 (10.6)

43 (12.8)

30 (15.3)

 

DM

            

  Yes

107 (4.3)

19 (7.9)

55 (4.7)

20 (3.3)

13 (2.9)

0.009†

47 (2.4)

18 (4.3)

19 (1.9)

5 (1.5)

5 (2.6)

0.044§

  No

2368 (95.7)

220 (92.1)

1125 (95.3)

594 (96.7)

429 (97.1)

 

1934 (97.6)

405 (95.7)

1006 (98.1)

332 (98.5)

191 (97.4)

 

Dyslipidemia

            

  Yes

112 (4.5)

14 (5.9)

61 (5.2)

25 (4.1)

12 (2.7)

0.124†

61 (3.1)

19 (4.5)

29 (2.8)

7 (2.1)

6 (3.1)

0.243†

  No

2363 (95.5)

225 (94.1)

1119* (94.8)

589 (95.9)

430 (97.3)

 

1920 (96.9)

404 (95.5)

996 (97.2)

330 (97.9)

190 (96.9)

 

Hypertension

            

  Yes

284 (11.5)

41 (17.2)

141 (11.9)

62 (10.1)

40 (9.0)

0.009†

169 (8.5)

43 (10.2)

71 (6.9)

25 (7.4)

30 (15.3)

0.001†

  No

2191 (88.5)

198 (82.8)

1039 (88.1)

552 (89.9)

402 (91.0)

 

1812 (91.5)

380 (89.8)

954 (93.1)

312 (92.6)

166 (84.7)

 
  1. SD, standard deviation; DM, diabetes mellitus; p, p-value. *problem alcohol drinking by AUDIT score, †calculated by chi-square test, ‡calculated by one-way ANOVA, §calculated by Fisher’s exact test.