From: The relationship between quality of sleep and night shift rotation interval
Variables | Group A | Group B | Group C | P-valuea |
---|---|---|---|---|
Number (%) | Number (%) | Number (%) | ||
Age | Â | Â | Â | <0.001 |
 20’s | 365 (84.7) | 1,371 (89.2) | 664 (78.1) |  |
 30’s | 66 (15.3) | 166 (10.8) | 186 (21.9) |  |
Marital status | Â | Â | Â | <0.001 |
 Unmarried | 320 (74.2) | 1,311 (85.3) | 737 (86.7) |  |
 Married | 110 (25.5) | 222 (14.4) | 110 (12.9) |  |
 Divorced | 1 (00.2) | 4 (00.3) | 3 (00.4) |  |
Education Level | Â | Â | Â | <0.001 |
  ≤ High school | 261 (60.6) | 1,000 (65.1) | 637 (74.9) |  |
  ≥ College | 170 (39.4) | 537 (34.9) | 213 (25.1) |  |
Smoking | Â | Â | Â | <0.001 |
 No | 412 (95.6) | 1,492 (97.1) | 676 (79.5) |  |
 Current | 19 (04.4) | 45 (02.9) | 174 (20.5) |  |
Alcohol consumption | Â | Â | Â | <0.001 |
 No | 219 (50.8) | 799 (52.0) | 339 (39.9) |  |
 Mild | 114 (26.5) | 418 (27.2) | 276 (32.5) |  |
 Moderate | 98 (22.7) | 340 (22.1) | 235 (27.6) |  |
Obesity (BMI) | Â | Â | Â | 0.062 |
 18.5–24.9 | 322 (74.7) | 1,122 (73.0) | 581 (68.4) |  |
  < 18.5 | 51 (11.8) | 200 (13.0) | 119 (14.0) |  |
  ≥ 25.0 | 58 (13.5) | 215 (14.0) | 150 (17.6) |  |
Exercise | Â | Â | Â | 0.005 |
  < 3 times per weeks | 158 (36.7) | 610 (39.7) | 384 (45.2) |  |
  ≥ 3 times per weeks | 273 (63.3) | 927 (60.3) | 466 (54.8) |  |
Sleep during working | Â | Â | Â | <0.001 |
 No | 12 (02.8) | 154 (10.0) | 431 (23.6) |  |
 Yes | 419 (97.2) | 1,383 (90.0) | 1,537 (76.4) |  |
Job tenure | Â | Â | Â | <0.001 |
  < 5 years | 97 (22.5) | 798 (51.9) | 338 (39.8) |  |
 5–9 years | 181 (42.0) | 384 (25.0) | 293 (34.5) |  |
  ≥ 10 years | 153 (35.5) | 355 (23.1) | 219 (25.8) |  |
Job tenure (Shift work) | Â | Â | Â | <0.001 |
  < 5 years | 100 (23.2) | 811 (52.8) | 341 (40.1) |  |
 5–9 years | 198 (45.9) | 425 (27.7) | 354 (41.6) |  |
  ≥ 10 years | 133 (35.9) | 301 (19.6) | 155 (18.2) |  |