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Table 2 Patient demographics, circumstances of accident, and environmental conditions.

From: Risk factors for onset of hypothermia in trauma victims: The HypoTraum study

  Patients with hypothermia on arrival at hospital Patients without hypothermia on arrival at hospital P
Demographics and morphological traits
Age (yearrs) 36 (23-53) 33 (23-44) 0.2
Male - Number (%) 49 (77) 275 (72) 0.7
Body weight (kg) 72 (60-80) 72 (65-80) 0.6
Height (cm) 172 (169-180) 174 (166-180) 0.9
Body Mass Index 24.2 (21.2 - 27.7) 24.5 (21.8 - 26.9) 0.5
Circumstances of accident - Number (%)   
Road accident 32 (50) 220 (57) 0.06
Fall 23 (36) 117 (30)  
Weapon (gun or knife) 2 (3) 18 (5)  
Other 7 (11) 29 (8)  
Environmental conditions
Daytime - Number (%) 37 (58) 262 (68) 0.5
Winter - Number (%) 20 (32) 110 (29) 0.09
Spring - Number (%) 14 (22) 91 (24)  
Summer - Number (%) 12 (19) 105 (27)  
Autumn - Number (%) 18 (28) 78 (20)  
Indoors - Number (%) 10 (16) 72 (19) 0.6
Air temperature (°C) 11.5 (6.7-16.4) 17.9 (11.0-23.0) 0.0001
Ground temperature (°C) 11.4 (7.1-17.1) 18.1 (11.1-22.9) <0.0001
Windy - Number (%) 8 (13) 28 (7) 0.2
Rain - Number (%) 10 (16) 37 (9) 0.3
  1. Values are given as medians with 25 to 75 percentiles.