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| Variable | Minimum | Maximum | Mean (SD)* |
| Age | 22 | 50 | 33.17 (6.39) |
| Job experience in month | 3 | 340 | 99.91 (75.12) |
| Job experience in neonatal units in month | 3 | 216 | 67.88 (57.53) |
| Number of shifts per week | 3 | 15 | 6.98 (1.34) |
*SD: standard deviation
