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Table 1 Background and characteristics of trauma patients in Sweden, March to June 2019 and 2020

From: A cohort study of trauma patients in Sweden during the first months of the COVID-19 pandemic: a small reduction in trauma admissions

  2019 2020 P value
Patient characteristics
 Patients (%) 3446 (100%) 2609 (100%)  
 Women (%) 1123 (32.59%) 753 (28.86%) 0.002
 Age, years (SD) 43.63 (23.00) 43.01 (23.38) 0.30
 < 18 years (%) 459 (13.32%) 390 (14.95%) 0.07
 30-day mortality (%) 161 (4.67%) 133 (5.10%) 0.30
Transport    0.12
 Ground ambulance (%) 2802 (81.31%) 2084 (79.88%)  
 Helicopter ambulance (%) 173 (5.02%) 164 (6.29%)  
 Private vehicle (%) 92 (2.67%) 82 (3.14%)  
 Walk-in (%) 92 (2.67%) 69 (2.64%)  
Pre-hospital
 Pre-hospital cardiac arrest (%) 51 (1.48%) 49 (1.88%) 0.15
 Pre-hospital GCS < 9 (%) 136 (3.95%) 144 (5.52%) 0.004
 Time to hospital, minutes median (IQR) 54.00 (41.00–72.00) 55.00 (40.00–72.00) 0.35
In-hospital
 LOS, days (SD) 5.53 (14.08) 5.43 (10.55) 0.77
 Ventilator days, (SD) 4.72 (7.78) 5.91 (10.79) 0.11
 Discharge GOS at baseline (%) 1798 (52.18%) 1281 (49.10%) 0.02
Emergency intervention    0.002
 Thoracotomy 22 (0.64%) 13 (0.50%)  
 Laparotomy 57 (1.65%) 42 (1.61%)  
 Limb revascularisation 20 (0.58%) 8 (0.31%)  
 Interventional radiology 27 (0.78%) 8 (0.31%)  
 Craniotomy 32 (0.93%) 38 (1.46%)  
 Intracranial pressure device 14 (0.57%) 26 (1.00%)  
 Other 286 (8.30%) 279 (10.69%)  
 No intervention performed 2974 (86.30%) 2145 (82.22%)  
Intention    0.17
 Unintentional (%) 2973 (86.27%) 2188 (83.86%)  
 Self-harm (%) 159 (4.61%) 118 (4.52%)  
 Assault (%) 249 (7.23%) 220 (8.43%)  
Injuries
 Blunt injuries (%) 3131 (90.86%) 2320 (88.92%) 0.63
 Penetrating injuries (%) 307 (8.91%) 247 (9.47%)  
 Number of injuries (SD) 3.85 (3.89) 4.09 (3.96) 0.02
 ISS, median (IQR) 5 (1–12) 5 (1–13)  < 0.001
 NISS, median (IQR) 6 (2–17) 8 (3–17)  < 0.001
Discharge destination    0.59
 Home (%) 2537 (73.62%) 1880 (72.06%)  
 Rehabilitation (%) 256 (7.43%) 213 (8.16%)  
 Morgue (%) 140 (4.06%) 106 (4.06%)  
 Other ICU (%) 144 (4.18%) 112 (4.29%)  
 Other ward (%) 365 (10.59%) 248 (9.51%)  
  1. IQR inter quartile range, SD standard deviation