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Table 1 Demographic characteristics of the participants and total scores for the PSQI and ERI

From: Evaluation of the correlation between effort-reward imbalance and sleep quality among community health workers

  N (%) PSQI score t/F P ERI ratio t/F P
Sex    6.233 0.013   9.968 0.002
 Male 138 (29.2) 9.11 ± 3.67    1.21 ± 0.24   
 Female 334 (70.8) 8.26 ± 3.22    1.15 ± 0.21   
Age range, y    2.476 0.061   11.458 0.000
 18–24 42 (8.9) 7.21 ± 2.91    1.03 ± 0.18   
 25–34 164 (34.7) 8.48 ± 3.38    1.14 ± 0.20   
 35–44 177 (37.5) 8.70 ± 3.32    1.23 ± 0.23   
 45–54 89 (18.9) 8.79 ± 3.59    1.16 ± 0.20   
Race    0.334 0.564   3.621 0.058
 Ethnic Han 453 (96.00) 8.49 ± 3.40    1.17 ± 0.22   
 Others 19 (4.00) 8.94 ± 2.71    1.07 ± 0.28   
Education    1.380 0.253   11.489 0.000
 Polytechnic school 35 (7.4) 8.14 ± 3.61    1.09 ± 0.13   
 College 228 (48.3) 8.30 ± 3.33    1.13 ± 0.21   
 Bachelor’s degree or above 209 (44.3) 8.79 ± 3.37    1.22 ± 0.23   
Marital status    3.907 0.452   3.087 0.002
 Married 406 (86.0) 8.55 ± 3.46    1.18 ± 0.22   
 Single 66 (24.0) 8.26 ± 2.81    1.10 ± 0.17   
Chronic illness    7.748 0.006   5.991 0.015
 Yes 62 (13.1) 9.61 ± 3.51    1.23 ± 0.19   
 No 410 (86.9) 8.34 ± 3.33    1.16 ± 0.22   
Type of work    3.717 0.054   28.627 0.000
 Doctor 249 (52.8) 8.79 ± 3.48    1.22 ± 0.24   
 Nurse 223 (47.2) 8.19 ± 3.24    1.11 ± 0.18   
Type of contract    3.937 0.020   2.766 0.064
 Long-term contract 186 (39.4) 8.21 ± 3.21    1.14 ± 0.21   
 Permanent contract 39 (8.3) 7.54 ± 3.02    1.13 ± 0.19   
 Authorized strength 247 (52.3) 8.89 ± 3.51    1.19 ± 0.23   
Shift work    9.862 0.002   29.256 0.000
 Day shift 327 (69.3) 8.19 ± 3.33    1.13 ± 0.21   
 Night shift 145 (30.7) 9.23 ± 3.39    1.25 ± 0.22   
Years of work experience    4.810 0.001   8.341 0.000
  < 5 65 (13.8) 6.92 ± 2.86    1.03 ± 0.20   
 5–9 127 (26.9) 8.90 ± 3.52    1.18 ± 0.20   
 10–19 150 (31.8) 8.81 ± 3.10    1.21 ± 0.22   
 20–29 103 (21.8) 8.40 ± 3.55    1.18 ± 0.23   
  ≥ 30 27 (5.7) 9.26 ± 3.69    1.14 ± 0.15   
Job title    2.268 0.080   12.587 0.000
 Registered 39 (8.3) 7.49 ± 3.25    1.05 ± 0.18   
 Primary 225 (47.7) 8.34 ± 3.36    1.13 ± 0.21   
 Intermediate 143 (30.3) 8.86 ± 3.39    1.23 ± 0.22   
 Subsenior 65 (13.8) 8.94 ± 3.37    1.22 ± 0.24   
Manager position    2.164 0.116   6.483 0.002
 No 314 (66.5) 8.28 ± 3.34    1.14 ± 0.21   
 Group leader 38 (8.1) 8.89 ± 3.62    1.23 ± 0.22   
 Director/Head doctor, nurse 120 (25.4) 8.98 ± 3.36    1.21 ± 0.23   
Personal monthly income, yuan    1.542 0.189   7.073 0.000
  ≤ 3000 59 (12.5) 7.73 ± 3.86    1.07 ± 0.22   
 3001-5000 197 (41.7) 8.64 ± 3.21    1.14 ± 0.21   
 5001-8000 165 (35.0) 8.80 ± 3.42    1.21 ± 0.22   
 8001-10,000 36 (7.6) 7.94 ± 3.20    1.21 ± 0.19   
  > 10,000 15 (3.2) 7.93 ± 3.17    1.29 ± 0.17   
Family monthly income, yuan    0.335 0.854   2.688 0.031
  ≤ 3000 52 (11.0) 8.60 ± 3.67    1.13 ± 0.22   
 3001-5000 129 (27.3) 8.77 ± 3.36    1.18 ± 0.22   
 5001-8000 112 (23.7) 8.46 ± 3.13    1.16 ± 0.23   
 8001-10,000 90 (19.1) 8.32 ± 3.40    1.12 ± 0.18   
  > 10,000 89 (18.9) 8.33 ± 3.53    1.21 ± 0.22