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Table 5 Detailed distribution of adverse events occurring in the ER: business hours 1 vs. off hours 2

From: The off-hour effect on trauma patients requiring subspecialty intervention at a community hospital in Japan: a retrospective cohort study

Preventable complication All (n = 805) Business hours (n = 379) Off hours (n = 426) OR (95% CI) p -value
Missed major injury, n (%) 30 (3.7) 8 (2.1) 22 (5.2) 2.5 (1.1–5.7) 0.025
Device infection, n (%) 13 (1.6) 4 (1.1) 9 (2.1) 2.0 (0.6–6.6) 0.27
Device malposition, n (%) 15 (1.9) 5 (1.3) 10 (2.3) 1.8 (0.6–5.3) 0.31
Endotracheal-intubation complications, n (%) 16 (2.0) 8 (2.1) 8 (1.9) 0.9 (0.3–2.3) 1.00
Delayed intervention, n (%) 9 (1.1) 5 (1.3) 4 (0.9) 0.7 (0.2–2.7) 0.74
Postoperative bleeding requiring reoperation, n (%) 6 (0.7) 2 (0.5) 4 (0.9) 1.8 (0.3–9.8) 0.69
Iatrogenic injury, n (%) 4 (0.5) 1 (0.3) 3 (0.7) 2.7 (0.3–25.9) 0.63
Total, n (%) 93 (11.5) 33 (8.7) 60 (14.1) 1.7 (1.1–2.7) 0.020
  1. 18:01 AM to 6:00 PM weekdays.
  2. 26:01 PM to 8:00 AM weekdays plus all weekend hours.
  3. CI, confidence interval; ER, emergency room; OR, odds ratio.