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Table 3 Clinical characteristics of injured patients: business hours 1 versus off hours 2 by subspecialty intervention

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

  ORIF TAE Laparotomy Craniotomy Thoracotomy
Characteristic Business hours (n = 251) Off hours (n = 256) Business hours (n = 63) Off hours (n = 81) Business hours (n = 48) Off hours (n = 70) Business hours (n = 11) Off hours (n = 16) Business hours (n = 6) Off hours (n = 3)
Age (years) 46.8 ± 22.8 42.7 ± 21.1* 56.9 ± 22.6 53.4 ± 23.0 53.8 ± 21.6 44.9 ± 19.8* 47.6 ± 17.6 42.5 ± 20.7 60.5 ± 11.0 44.3 ± 22.0
Males, n (%) 184 (73.3) 191 (74.6) 41 (65.1) 49 (60.5) 31 (64.6) 49 (70.0) 8 (72.7) 14 (87.5) 6 (100.0) 3 (100.0)
ISS 11.0 ± 8.6 13.0 ± 10.5* 32.9 ± 17.0 34.0 ± 13.4 23.8 ± 15.8 26.2 ± 12.2 27.4 ± 10.4 29.2 ± 12.9 35.0 ± 12.2 33.3 ± 15.0
RTS 7.6 ± 0.8 7.6 ± 0.6 6.8 ± 1.7 6.5 ± 1.8 7.0 ± 1.5 6.9 ± 1.4 6.1 ± 1.4 6.4 ± 1.0 5.8 ± 2.1 7.3 ± 0.5
Ps 0.96 ± 0.11 0.96 ± 0.13 0.70 ± 0.34 0.71 ± 0.34 0.80 ± 0.31 0.85 ± 0.22 0.66 ± 0.31 0.79 ± 0.22 0.60 ± 0.44 0.72 ± 0.24
ASA-PS 2.3 ± 0.7 2.3 ± 0.7 3.6 ± 0.8 3.7 ± 0.8 3.3 ± 0.8 3.2 ± 0.9 3.3 ± 1.0 3.3 ± 0.7 4.2 ± 0.8 4.3 ± 1.2
CCI 0.36 ± 0.9 0.28 ± 0.7 0.46 ± 0.69 0.56 ± 0.96 0.73 ± 1.2 0.21 ± 0.59*** 0.36 ± 0.92 0.56 ± 0.89 0.50 ± 0.84 0.0 ± 0.0
Penetrating injury, n (%) 51 (20.3) 40 (15.6) 2 (3.2) 1 (1.2) 4 (8.3) 7 (10.0) 1 (9.1) 0 (0.0) 1 (16.7) 0 (0.0)
  1. 18:01 AM to 6:00 PM weekdays.
  2. 26:01 PM to 8:00 AM weekdays plus all weekend hours.
  3. Data expressed as mean ± standard deviation unless otherwise indicated. *p < 0.05, ***p < 0.001. ASA-PS, American Society of Anesthesiologists Physical Status; CCI, Charlson comorbidity index; ISS, Injury Severity Score; ORIF, open reduction with internal fixation; Ps, Probability of survival; RTS, Revised Trauma Score; TAE, transarterial embolization.