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Table 4 Patient characteristics

From: Evaluation of a targeted, theory-informed implementation intervention designed to increase uptake of emergency management recommendations regarding adult patients with mild traumatic brain injury: results of the NET cluster randomised trial

Patient characteristics NET control1 NET intervention2 NET-Plus control 3 NET-Plus intervention 4
N (%5)/mean (SD) N (%5)/mean (SD) N (%5)/mean (SD) N (%5)/mean (SD)
Age 50.9 (23.65) 54.2 (24.93) 53.5 (20.59) 55.2 (21.17)
Sex (male) 476 (45%) 390 (44%) 105 (48%) 51 (41%)
After hours presentation 748 (71%) 653 (73%) 149 (68%) 90 (72%)
Initial GCS 15 961 (92%) 768 (86%) 213 (98%) 115 (92%)
Initial GCS 14 89 (8%) 125 (14%) 5 (2%) 10 (8%)
Mechanism of injury
 Incidental fall 492 (47%) 481 (54%) 113 (52%) 65 (52%)
 Road traffic 58 (6%) 51 (6%) 11 (5%) 10 (8%)
 Violence / assault 250 (24%) 163 (18%) 36 (17%) 15 (12%)
 Sport 62 (6%) 55 (6%) 17 (8%) 11 (9%)
 Others 179 (17%) 137 (15%) 41 (19%) 24 (19%)
 Unclear/not reported 9 (0.9%) 6 (0.7%) 0 (0.0%) 0 (0.0%)
Presence other injuries (outside head) 508 (48%) 516 (58%) 105 (48%) 63 (50%)
Alcohol/illicit drug involvement 237 (23%) 206 (23%) 28 (13%) 15 (12%)
Pre-existing coagulopathy or anti-coagulant or anti-platelet drugs 175 (17%) 165 (18%) 37 (17%) 17 (14%)
Known previous neurological condition 202 (19%) 191 (21%) 26 (12%) 13 (10%)
Known neurosurgery 14 (1.3%) 18 (2.0%) 2 (0.9%) 3 (2.4%)
Scalp laceration 532 (51%) 464 (52%) 130 (60%) 67 (54%)
Scalp haematoma 400 (38%) 372 (42%) 79 (36%) 42 (34%)
Clinical suspicion of skull fracture 51 (4.9%) 57 (6%) 8 (3.7%) 8 (6%)
Loss of consciousness 186 (18%) 155 (17%) 50 (23%) 18 (14%)
Vomiting 56 (5%) 49 (5%) 12 (6%) 4 (3.2%)
Headache 259 (25%) 231 (26%) 44 (20%) 37 (30%)
Post traumatic seizure 3 (0.3%) 6 (0.7%) 0 (0.0%) 2 (1.6%)
Focal neurological deficit 21 (2.0%) 13 (1.5%) 5 (2.3%) 3 (2.4%)
  1. 1Number of patients = 1050; numbers of clusters = 17
  2. 2Number of patients = 893; number of clusters = 14
  3. 3Number of patients = 218; number of clusters = 14
  4. 4Number of patients = 125; number of clusters = 10
  5. 5Percentages of less than 5% are given to one decimal place