| Crude model (HR (95% CI) | Corrected model (HR (95% CI) | P (Corrected model) |
---|---|---|---|
PIRO group 1 to 7 (n = 413) | |||
Antibiotics <1 hour (reference category) | 1 | 1 | 0.422a |
Antibiotics 1–3 hours | 0.95 (0.17-5.18) | 2.55 (0.36-18.25) | 0.352 |
Antibiotics >3 hours | 1.98 (0.36-10.78) | 5.31 (0.43-68.16) | 0.191 |
Type of hospital (academic versus urban) | Â | 0.06 (0.007-0.48) | 0.008 |
P score | Â | 2.53 (1.41-4.56) | 0.002 |
Appropriateness of antibiotics | Â | 0.33 (0.06-1.66) | 0.180 |
Amount of oxygen (L/min) | Â | 1.17 (1.02-1.35) | 0.028 |
Amount of fluids (L/ ED stay) | Â | 1.65 (0.76-3.59) | 0.205 |
PIRO group 8 to 14 (n = 532) | |||
Antibiotics <1 hour (reference category) | 1 | 1 | 0.676a |
Antibiotics 1–3 hours | 1.11 (0.62-1.99) | 1.25 (0.62-2.31) | 0.488 |
Antibiotics >3 hours | 0.65 (0.22-1.90) | 0.86 (0.28-2.63) | 0.786 |
Type of hospital (academic versus urban) | Â | 0.35 (0.19-0.68) | 0.002 |
P score | Â | 1.29 (1.14-1.46) | <0.001 |
R score | Â | 0.74 (0.62-0.89) | 0.001 |
O score | Â | 1.28 (1.10-1.50) | 0.002 |
Amount of oxygen (L/min) | Â | 1.04 (1.00-1.09) | 0.067 |
PIRO group >14 (n = 223) | |||
Antibiotics <1 hour (reference category) | 1 | 1 | 0.978a |
Antibiotics 1–3 hours | 1.10 (0.62-1.97) | 0.99 (0.53-1.87) | 0.983 |
Antibiotics >3 hours | 0.93 (0.36-2.43) | 1.11 (0.40-3.08) | 0.849 |
Type of hospital (academic versus urban) | Â | 1.57 (0.83-3.00) | 0.166 |
O score | Â | 1.15 (1.00-1.34) | 0.056 |
β-blocker use |  | 0.96 (0.51-1.79) | 0.892 |
Appropriateness of antibiotics | Â | 0.35 (0.19-0.62) | <0.001 |
Amount of oxygen (L/min) | Â | 1.01 (0.98-1.04) | 0.414 |
Amount of fluids (L/ED stay) | Â | 0.88 (0.65-1.20) | 0.425 |