Timing (24 h) | Study period | P value | |
---|---|---|---|
Pre-accreditation | Post-accreditation | ||
000–0600 | 2.41 ± 1.2 (70) | 1.85 ± 1.0 (66) | 0.003a |
0600–1200 | None | 1.44 ± 0.5 (16) | N. A. |
1200–1800 | 2.0 ± 0.8 (4) | 1.60 ± 0.6 (50) | 0.263 |
1800–2400 | 5.05 ± 2.4 (128) | 3.30 ± 1.4 (152) | <0.001a |