| Variable(s) | Category(s) | M (SD) | t/F/r | P |
| Professional education | Diploma in Nursing | 6.20 (0.632) | 0.334 | 0.717 |
|
| BSc in Nursing/BSc in PHN | 6.31 (0.565) |
|
|
|
| MSc Nursing/Equivalent MPH | 6.41 (0.512) |
|
|
| Working experience | ≤ 10 years | 6.18 (0.682) | 1.12 | 0.327 |
|
| 11 - 20 years | 6.30 (0.460) |
|
|
|
| ≥21 years | 6.20 (0.614) |
|
|
| Job responsibility | Ward In charge | 6.36 (0.641) | 0.984 | 0.327 |
|
| Clinical Nurse/Sub-incharge | 6.23 (0.611) |
|
|
| Duty hour per week | ≤40 hours | 5.60 (0.550)a | 3.86 | 0.024 c, a > b |
|
| 41 - 50 hours | 6.25 (0.640)b |
|
|
|
| >50 hours | 6.41 (0.484)c |
|
|
| Fatigue |
|
| −0.303** | 0.001 |