Table 1

Descriptive statistics by study population, defined by vital sign missingness

% (n)All five vital signs available (n=339)Missing vital sign(s) (n=248)p Value
Demographics
 Age, years*54 (35–74)57 (40.5–78)0.05
 Male62.2 (211)56.9 (141)0.19
 White race73.5 (249)78.2 (194)0.18
 Fall cause of injury55.5 (188)58.1 (144)0.89
 Head injury44.0 (149)48.9 (121)0.25
 Neck or spine injury14.5 (49)16.5 (41)0.49
 Chest injury9.7 (33)9.7 (24)0.98
 Limb injury27.7 (94)25.4 (63)0.53
MEWS subscore change from transferring to receiving facility
 Deterioration in SBP3.83 (13)3.23 (8)0.76
 Deterioration in HR11.80 (40)14.11 (35)0.34
 Deterioration in RR9.44 (32)8.87 (22)1.0
 Deterioration in Temp0.29 (1)0 (0)1.0
 Deterioration in GCS6.49 (22)2.02 (5)0.07
Outcomes
 In-hospital mortality5.6 (19)8.1 (20)0.24
 ICU admission50.2 (170)51.2 (127)0.80
 Surgical procedure35.4 (120)29.4 (73)0.13
 Air transport, interfacility18.6 (63)18.2 (45)0.91
 MEWS deterioration21.9 (72)21.2 (52)0.99
 Secondary overtriage21.5 (73)22.2 (55)0.85
 Severe injury (ISS≥16)30.75 (103)32.39 (80)0.67
  • * Data are presented as median (IQR).

  • GCS, Glasgow Coma Scale; GSW, gunshot wound; HR, heart rate; ICU, intensive care unit; ISS, injury severity score; RR, respiratory rate; SBP, systolic blood pressure; Temp, temperaute.  Secondary overtriage: ISS <10, hospital LOS<1 day and discharged home.