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Table 1 Demographic characteristics of injured patients who had a predicted difficult airway: business hoursa vs. off hoursb

From: Association between off-hour presentation and endotracheal-intubation-related adverse events in trauma patients with a predicted difficult airway: A historical cohort study at a community emergency department in Japan

Variable

All

(n = 123)

Business hours

(n = 48)

Off hours

(n = 75)

p value

Age (years)

59.0 (34.0–70.0)

57.0 (32.0–65.5)

59.0 (39.5–70.5)

0.42

Male, n (%)

85 (69.1)

36 (75.0)

49 (65.3)

0.32

Glasgow Coma Scale score

13.0 (9.0–15.0)

13.0 (10.8–15.0)

13.0 (8.5–15.0)

0.97

Initial vital signs recorded in the ED

 Systolic blood pressure (mmHg)

130.0 (107.0–163.0)

142.0 (113.5–170.0)

127.5 (106.3–149.5)

0.23

 Heart rate (beats/min)

100.0 (80.0–120.0)

92.0 (79.8–120.0)

103.0 (82.5–123.5)

0.35

 Respiratory rate (breaths/min)

20.0 (18.0–30.0)

20.0 (16.0–30.0)

20.0 (18.0–30.0)

0.51

 Pulse oximetry saturation

100.0 (98.0–100.0)

100.0 (99.0–100.0)

100.0 (98.0–100.0)

0.53

ISS

26.0 (16.0–41.0)

26.0 (16.3–35.0)

26.0 (16.5–41.0)

0.96

AIS

 Head or neck

0 (0–2.0)

0 (0–2.0)

0 (0–3.0)

0.86

 Face

0 (0–1.0)

0 (0–0)

0 (0–1.5)

0.55

 Chest

3.0 (0–4.0)

0 (0–3.3)

3.0 (0–5.0)

0.033

 Abdomen or pelvic contents

0 (0–0)

0 (0–0)

0 (0–0)

0.54

 Extremities or pelvic girdle

0 (0–1.0)

0 (0–0.3)

0 (0–1.0)

0.21

 External

1.0 (0–5.0)

2.0 (0–5.0)

0 (0–4.0)

0.031

RTS

7.8 (5.9–7.8)

7.8 (6.2–7.8)

7.8 (5.7–7.8)

0.79

Ps

0.91 (0.62–0.97)

0.90 (0.65–0.98)

0.91 (0.62–0.96)

0.68

Charlson Comorbidity Index

0 (0–1.0)

0 (0–1.0)

0 (0–1.0)

1.00

Suicidal attempt, n (%)

45 (36.6)

21 (43.8)

24 (32.0)

0.25

Trauma etiology

 Inhalation burn, n (%)

76 (61.8)

28 (58.3)

48 (64.0)

0.57

 Comminuted facial traumac, n (%)

28 (22.8)

11 (22.9)

17 (22.7)

1.00

 Penetrating neck injury, n (%)

19 (15.4)

9 (18.8)

10 (13.3)

0.45

Survival (%)

70 (56.9)

27 (56.3)

43 (57.3)

1.00

  1. Data are expressed as the median (interquartile range) or n (%)
  2. AIS Abbreviated Injury Scale Score, ED emergency department, ISS Injury Severity Score, Ps probability of survival, RTS Revised Trauma Score
  3. a8:01 AM to 6:00 PM weekdays
  4. b6:01 PM to 8:00 AM weekdays plus all weekend hours
  5. cAIS Face ≥3