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Table 1 Clinical characteristics of the study subjects

From: Shift work is associated with metabolic syndrome in male steel workers-the role of resistin and WBC count-related metabolic derangements

Parameter Shift work Day work p value
No 870 862  
Age (years) (n, %)
 25–40 338 (38.9) 354 (41.1) 0.35
 40–50 411 (47.2) 365 (42.3) 0.04
 50–60 113 (13.0) 122 (14.2) 0.48
 > 60 8 (0.9) 21 (2.4) 0.02
Alcohol use (n, %)
 Never 470 (54.0) 501 (58.1) 0.09
 Former 25 (2.9) 20 (2.3) 0.47
 Current 375 (43.1) 341 (39.6) 0.13
Smoking (n, %)
 Never 404 (46.4) 506 (58.7) < 0.0001
 Former 104 (12.0) 101 (11.7) 0.88
 Current 362 (41.6) 255 (29.6) < 0.0001
Betel quid use (n, %)
 Never 636 (73.1) 747 (86.7) < 0.0001
 Former 94 (10.8) 43 (5.0) < 0.0001
 Current 140 (16.1) 72 (8.4) < 0.0001
Physical exercise in the past month (n, %)
 Hardly ever 225 (25.9) 127 (14.7) < 0.0001
 Once 86 (9.9) 87 (10.1) 0.91
 Twice or more 559 (64.3) 648 (75.2) < 0.0001
Poor sleep (n, %)
 Almost never 600 (69.0) 683 (79.2) < 0.0001
 Sometimes 181 (20.8) 122 (14.2) 0.002
 Often or almost always 89 (10.2) 57 (6.6) 0.02
Central obesity (n, %) 338 (38.9) 292 (33.9) 0.03
Hypertension (n, %) 436 (50.1) 353 (41.1) 0.0002
Hypertriglyceridemia (n, %) 315 (36.2) 271 (31.4) 0.04
Low–high-density lipoprotein-cholesterol (n, %) 224 (25.8) 224 (26.0) 0.91
Dysglycemia (n, %) 300 (34.5) 288 (33.4) 0.64
Metabolic syndrome (n, %) 276 (31.7) 233 (27.0) 0.03