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Table 2 Care and outcome parameters of injured patients: 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

  All Shock (SBP < 90 mmHg) Penetrating injury ISS > 15
Parameter Business hours (n = 379) Off hours (n = 426) Business hours (n = 59) Off hours (n = 81) Business hours (n = 59) Off hours (n = 48) Business hours (n = 152) Off hours (n = 218)
Prehospital time (min) 50.4 ± 25.0 50.7 ± 25.7 52.8 ± 23.2 51.3 ± 27.4 41.2 ± 20.6 43.9 ± 22.1 56.2 ± 27.3 53.0 ± 26.7
ER stay time (min) 143.1 ± 80.2 144.9 ± 67.7 110.9 ± 69.4 133.1 ± 72.1* 132.4 ± 85.9 115.1 ± 48.5 140.7 ± 85.7 147.4 ± 69.0*
Total time to OR (min) 193.5 ± 83.8 195.6 ± 69.1 163.7 ± 71.7 184.4 ± 73.7* 173.5 ± 88.8 159.0 ± 54.6 196.9 ± 90.8 200.4 ± 69.9
Mortality, n (%) 32 (8.4) 34 (8.0) 18 (30.5) 21 (25.9) 0 (0) 0 (0) 31 (20.4) 32 (14.7)
Unexpected trauma death 3 (%) 12/342 (3.5) 18/391 (4.6) 4/ 32 (12.5) 7/54 (13.0) 0/0 (0) 0/0 (0) 11/115 (9.6) 16/183 (8.7)
Good recovery, n (%) 318 (83.9) 361 (84.7) 35 (59.3) 52 (64.2) 54 (91.5) 44 (91.7) 110 (72.4) 169 (77.5)
Adverse events in the ER, n (%) 33 (8.7) 60 (14.1)* 10 (16.9) 17 (21.0) 1 (1.7) 1 (2.1) 24 (15.8) 46 (21.1)
  1. 18:01 AM to 6:00 PM weekdays.
  2. 26:01 PM to 8:00 AM weekdays plus all weekend hours.
  3. 3Death/Ps>0.5.
  4. Data expressed as mean ± standard deviation unless otherwise indicated. *p < 0.05. ER, emergency room; ISS, Injury Severity Score; OR, operating room; Ps, probability of survival; RTS, Revised Trauma Score; SBP, systolic blood pressure.