Variable | Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|
OR (95Â % CI) | P value | OR (95Â % CI) | P value | |
Patient characteristics | ||||
 Age, yr | 1.00 (0.99–1.02) | 0.67 | NT |  |
 Sex | 0.94 (0.58–1.51) | 0.79 | NT |  |
 Weight, kg | 1.02 (1.00–1.04) | 0.06 | NT |  |
   < 65 | Reference | – |  |  |
   ≥ 65 | 1.46 (0.92–2.32) | 0.11 |  |  |
 ICU admission type | 1.04 (0.80–1.34) | 0.79 | NT |  |
Clinical characteristics before transport | ||||
 APACHE II score | 1.43 (1.06–1.91) | 0.02* |  |  |
   ≤ 11 | Reference | – | Reference | – |
  12–19 | 1.25 (0.74–2.12) | 0.40 | 1.27 (0.73–2.22) | 0.40 |
   ≥ 20 | 2.11 (1.14–3.88) | 0.02* | 1.89 (0.98–3.67) | 0.06 |
 Glasgow Coma Scale score | 1.14 (0.86–1.51) | 0.36 | NT |  |
  15 | Reference | – |  |  |
  9–14 | 0.86 (0.47–1.56) | 0.62 |  |  |
   ≤ 8 | 1.39 (0.77–2.51) | 0.27 |  |  |
 Artificial airway | 1.26 (0.80–2.01) | 0.32 | NT |  |
 Ventilation | 1.22 (0.77–1.94) | 0.40 | NT |  |
 Number of catheters | 1.24 (1.00–1.54) | 0.05 | NT |  |
 Arterial blood gas analysis |  |  |  |  |
  pH |  |  |  |  |
   7.35–7.45 | Reference | – | Reference | – |
    < 7.35 or >7.45 | 1.55 (1.34–1.88) | 0.01* | 1.53 (1.32–1.88) | 0.01* |
  PaO2 | 1.00 (0.99–1.00) | 0.07 | NT |  |
  PaCO2, mmHg |  |  |  |  |
   35–45 | Reference | – |  |  |
    < 35 or >45 | 1.61 (1.38–1.97) | 0.04* | 1.49 (1.29–1.81) | 0.00* |
  Bicarbonate level, mmol/L |  |  | NT |  |
   22–27 | Reference | – |  |  |
    < 22 or >27 | 1.08 (0.68–1.71) | 0.75 |  |  |
  Lactate level, mmol/L | 1.60 (1.17–2.18) | 0.00* |  |  |
    < 2 | reference | – | Reference | – |
    ≥ 2 | 2.11 (1.10–4.07) | 0.03* | 1.47 (1.04–2.08) | 0.03* |
  Glucose level, mmol/L |  |  |  |  |
   4.0–10.0 | Reference | – |  |  |
    < 4 or >10 | 2.27 (1.21–4.28) | 0.01* | 1.97 (1.01–3.84) | 0.04* |
 Vital signs |  |  |  |  |
  SBP, mmHg |  |  | NT |  |
   90–150 | Reference | – |  |  |
    < 90 or >150 | 1.37 (0.67–2.82) | 0.39 |  |  |
  DBP, mmHg | 1.01 (1.00–1.03) | 0.12 | NT |  |
  MAP, mmHg | 1.02 (1.00–1.03) | 0.08 | NT |  |
  Heart rate |  |  |  |  |
   50–110 | Reference | – | Reference | – |
    < 50 or >110 | 3.02 (1.40–6.51) | 0.00* | 2.73 (1.21–6.16) | 0.02* |
  Respiratory rate |  |  |  |  |
   12–25 | Reference | – | Reference | – |
    < 12 or >25 | 2.33 (1.19–4.59) | 0.01* | 2.00 (0.98–4.10) | 0.06 |
  Pulse oximetry | 0.93 (0.85–1.02) | 0.13 | NT |  |
  Analgesia | 1.60 (0.78–3.27) | 0.20 | NT |  |
  Sedation | 1.42 (0.80–2.54) | 0.24 | NT |  |
  Vasoactive drug support | 2.02 (1.09–3.75) | 0.03* | 1.85 (0.97–3.55) | 0.06 |
Transport characteristics | ||||
 Analgesia | 1.25 (0.56–2.78) | 0.59 | NT |  |
 Sedation | 1.07 (0.58–1.95) | 0.83 | NT |  |
 Vasoactive drug support | 1.60 (0.86–2.99) | 0.14 | NT |  |
 Emergency transport | 0.52 (0.26–1.03) | 0.06 | NT |  |
 Multiple IHTs of one patient | 1.29 (0.76–2.18) | 0.34 | NT |  |
 Night transport | 0.64 (0.22–1.91) | 0.43 | NT |  |
 Transport duration, minutes | 1.01 (0.99–1.03) | 0.32 | NT |  |