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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.