Table 1

Missing data for vital signs and imputation model

Vital signMissing % of total patients (interhospital range)
Heartrate42.7 (19.5–62.9)
Respiratory rate52.4 (23.5–87.4)
Oxygen saturation44.9 (19.7–66.4)
Temperature22.5 (5.9–58.2)
  • Missing data for vital signs were imputed using a multiple imputation model including patient characteristics, date and time, triage items, vital signs, diagnostics, therapy and disposition after the ED. This imputation process resulted in 25 datasets on which statistical analyses were performed and pooled for a final result.27 Imputation was performed by using the MICE imputation package in R V.2.15.2.

  • ED, emergency department.