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Table 1 Clinical characteristics 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

Characteristic

All (n = 805)

Business hours (n = 379)

Off hours (n = 426)

p value

Age (years)

47.2 ± 22.2

49.6 ± 22.7

45.1 ± 21.6

0.0030

Male, n (%)

576 (71.6)

270 (71.2)

306 (71.8)

0.88

ISS

18.6 ± 14.6

17.1 ± 14.6

19.9 ± 14.4

<0.001

RTS

7.3 ± 1.2

7.3 ± 1.2

7.2 ± 1.2

0.042

Ps

0.88 ± 0.23

0.88 ± 0.24

0.88 ± 0.23

0.315

Glasgow Coma Scale

13.5 ± 3.0

13.6 ± 2.9

13.4 ± 3.1

0.054

SBP (mmHg)

123.9 ± 58.1

124.2 ± 33.2

123.6 ± 73.5

0.064

Heart rate (beats per min)

89.8 ± 23.0

89.0 ± 24.2

90.6 ± 21.9

0.092

Respiratory rate (breaths per min)

20.0 ± 7.9

19.8 ± 8.0

20.3 ± 7.7

0.253

ASA-PS

2.7 ± 1.0E

2.7 ± 0.9E

2.8 ± 1.0E

0.30

CCI

0.37 ± 0.82

0.43 ± 0.91

0.33 ± 0.73

0.48

Penetrating injury, n (%)

107 (13.3)

59 (15.6)

48 (11.3)

0.078

ORIF, n (%)

507 (63.0)

251 (66.2)

256 (60.1)

0.079

TAE, n (%)

144 (17.9)

63 (16.6)

81 (19.0)

0.41

Laparotomy, n (%)

118 (14.7)

48 (12.7)

70 (16.4)

0.14

Craniotomy, n (%)

27 (3.4)

11 (2.9)

16 (3.8)

0.56

Thoracotomy, n (%)

9 (1.1)

6 (1.6)

3 (0.7)

0.32

Presentation 2002–2005

314 (39.0)

148 (39.1)

166 (39.0)

1.00

Presentation 2006–2009

233 (28.9)

98 (25.9)

135 (31.7)

0.074

Presentation 2010–2013

258 (32.0)

133 (35.1)

125 (29.3)

0.083

  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 or n (%).
  4. 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; SBP, systolic blood pressure; TAE, transarterial embolization.