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Table 3 Physiological parameters and life-saving procedures performed at ED for adult motorcycle traffic accident trauma patients

From: The protective effect of helmet use in motorcycle and bicycle accidents: a propensity score–matched study based on a trauma registry system

  Original cohort Propensity score-matched cohort
Parameters Helmet use
Yes n = 7735
Helmet use
No n = 863
Odds ratio
(95%)
P Helmet use
Yes n = 856
Helmet use
No n = 856
Odds ratio
(95%)
P
Physiology at ED, n (%)
 SBP < 90 mmHg 163(2.1) 24(2.8) 0.8(0.49–1.16) 0.198 18(2.1) 24(2.8) 0.7(0.40–1.38) 0.349
 Heart rate > 100 beats/min 1363(17.6) 182(21.1) 0.8(0.67–0.95) 0.012 159(18.6) 181(21.1) 0.9(0.67–1.08) 0.183
 Respiratory rate < 10 or >29 /min 34(0.4) 11(1.3) 0.3(0.17–0.68) 0.004 5(0.6) 11(1.3) 0.5(0.16–1.31) 0.132
Procedures at ED, n (%)
 Cardiopulmonary resuscitation 8(0.1) 2(0.2) 0.4(0.09–2.10) 0.265 1(0.1) 2(0.2) 0.5(0.05–5.52) 1.000
 Intubation 147(1.9) 57(6.6) 0.3(0.20–0.38) <0.001 17(2.0) 57(6.7) 0.3(0.16–0.49) <0.001
 Chest tube insertion 108(1.4) 16(1.9) 0.8(0.44–1.27) 0.285 14(1.6) 16(1.9) 0.9(0.42–1.80) 0.713
 Blood transfusion 266(3.4) 38(4.4) 0.8(0.55–1.09) 0.146 37(4.3) 38(4.4) 1.0(0.61–1.55) 0.906
  1. ED = emergency department; SBP = systolic blood pressure