Table 1 Study population demographics, mechanism, presentation, anatomical injury site and patient disposition

Demographics

n [%]

n [%]

n [%]

n [%]

 Patients

1321 [100]

423 [32.0]

575 [43.5]

323 [24.5]

.001¹

 Age, years (n, IQR)

75 [69–81]

73 [68–80]

75 [69–81]

76 [70–82]

.608²

  65–74

657 [49.7]

226 [53.4]

280 [48.7]

151 [46.8]

.157¹

  75–84

468 [35.4]

136 [32.1]

218 [37.9]

114 [35.3]

.170¹

  > 85

196 [14.8]

61 [14.4]

77 [13.4]

58 [17.7]

.174¹

 Males

832 [62.9]

289 [68.3]

354 [61.6]

189 [58.5]

.15¹

 999-dispatch time (mins, mean - 95%CI)

18 [16.5–18.9]

6.3 [5.7–6.9]

15.1 [13.4–16.8]

37.1 [34.4–39.9]

.001³

Mechanism

1321 [100]

423 [32.0]

575 [43.5]

323 [24.5]

.001

 Assault [blunt]

1 [100]

0 [0]

0 [0]

1 [1.0]

.213

 Assault [penetrating]

13 [100]

6 [46.1]

3 [23.0]

4 [30.7]

.213

 Fall < 2 m

120 [100]

15 [12.5]

43 [35.8]

62 [51.6]

.001

 Fall > 2 m

388 [100]

132 [34.0]

144 [37.1]

112 [28.8]

.006

 ISH other

10 [100]

4 [40.0]

4 [40.0]

2 [20.0]

.856

 ISH sharp

24 [100]

10 [41.6]

14 [58.3]

0 [0]

.005

 Other

103 [100]

23 [22.3]

47 [45.6]

33 [32.0]

.49

 RTC cyclist

66 [100]

24 [36.3]

28 [42.4]

14 [21.2]

.712

 RTC driver

246 [100]

73 [29.6]

130 [52.8]

43 [17.4]

.002

 RTC passenger

103 [100]

35 [33.9]

51 [49.5]

17 [16.5]

.14

 RTC pedestrian

212 [100]

87 [41.0]

98 [46.2]

27 [12.7]

.001

 RTC motorcyclist

35 [100]

14 [40.0]

13 [37.1]

8 [22.8]

.58

 TCA

99 [7.4]

71 [16.8]

14 [2.4]

14 [4.3]

.001

 Isolated trauma

622 [47.0]

192 [45.4]

266 [46.2]

164 [50.8]

.304

 Polytrauma

633 [47.9]

217 [51.3]

266 [46.2]

150 [46.4]

.242

Anatomical injury site

4743 [100]

1510 [31.84]

43.28 [43.28]

1180 [24.88]

.001

 Head

897 [67.9]

307 [34.2]

350 [39.0]

240 [26.7]

.001

 Neck

162 [12.3]

47 [29.0]

74 [45.6]

41 [25.3]

.683

 Thorax

544 [41.1]

193 [35.4]

229 [42.0]

122 [22.4]

.066

 Abdomen

301 [22.8]

109 [36.2]

128 [42.5]

64 [21.2]

.145

 Upper arm

172 [13.0]

54 [31.3]

77 [44.7]

41 [23.8]

.95

 Upper leg

143 [10.8]

36 [25.1]

70 [48.9]

37 [25.8]

.168

Transported patients

1204 [19.1]

341 [80.6]

550 [95.7]

313 [96.9]

.001

 Carry

407 [30.8]

125 [29.5]

163 [28.4]

119 [36.8]

.022

 Escort

369 [27.9]

109 [25.7]

147 [25.6]

113 [34.9]

.005

 Assist

438 [33.1]

112 [26.44]

243 [42.3]

83 [25.7]

.001

 PLE

106 [8.0]

77 [18.2]

22 [3.9]

7 [2.2]

.001

 Unknown

1 [0.1]

0 [0]

0 [0]

1 [0.3]

.245

 MTC

793 [60.0]

244 [57.7]

324 [56.4]

225 [69.7]

.001

 TU

374 [28.3]

91 [21.5]

202 [35.1]

81 [25.1]

.001

 LEH

37 [2.8]

6 [1.4]

24 [4.1]

7 [2.2]

.024

 Unknown

11 [0.8]

5 [1.2]

3 [0.5]

3 [1.0]

.549