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Table 2 Baseline general characteristics of the study population

From: Effects of shift work on abdominal obesity among 20–39-year-old female nurses: a 5-year retrospective longitudinal study

  N (%) or mean (SD)
  20–29 years old 30–39 years old
Total Day workers Shift workers Total Day workers Shift workers
  730 (100.0) 174 (23.8) 556 (76.2) 204 (100.0) 135 (66.2) 69 (33.8)
Alcohol consumption       
 Healthy drinking 702 (96.2) 170 (97.7) 532 (95.7) 199 (97.5) 130 (96.3) 69 (100)
 Unhealthy drinking a 28 (3.8) 4 (2.3) 24 (4.3) 5 (2.5) 5 (3.7) 0 (0)
Exercise       
 Basic b 239 (32.7) 59 (33.9) 180 (32.4) 83 (40.7) 53 (39.3) 30 (43.5)
 Insufficient c 73 (10.0) 18 (10.3) 55 (9.9) 38 (18.6) 27 (20.0) 11 (15.9)
 Sufficient d 418 (57.3) 97 (55.7) 321 (57.7) 83 (40.7) 55 (40.7) 28 (40.6)
Tenure (years) 1.3 (2.0) 1.9 (2.5) 1.1 (1.8) 10.4 (4.7) 10.4 (5.1) 10.5 (4.0)
Waist circumference (cm) 68.7 (4.2) 68.4 (4.0) 68.8 (4.3) 70.3 (3.9) 70.1 (3.7) 70.7 (4.2)
Abdominal obesity e 10(1.4) 0 (0) 10 (1.8) 6 (2.9) 3 (2.2) 3 (4.3)
  1. a An average of >5 drinks per week or drinking more than twice per week
  2. b A weekly total exercise score of 4–6 points
  3. c A weekly total exercise score of ≤3 points
  4. d A weekly total exercise score of >7 points
  5. e A waist circumference of ≥80 cm.
  6. * Abbreviations: SD standard deviation