Study | Number of hospitals | Adjusted for | P value | Total Variation accounted for by the model (%) | Variation accounted for by hospital site (%) | Proportion of total variation accounted for by the model due to hospital site (%) |
---|---|---|---|---|---|---|
Cabre et al. 2007 [14] | 27 | PSI risk class, Complications during hospitalisation, Admission to ICU, Oxygen therapy, Discharge to a NH | < 0.001 | 28.99 | 12 | 41.5 |
Feagan et al. 2000 [17] | 20 | PSI, Smoking status, COPD or asthma, Bacterial pneumonia | Not reported | 21 | 7 | 33.3 |
Fine et al. 1993 [10] | 4 | PSI risk class, Age, NH resident, Race, Bacteraemia, Serum sodium <= 130 mmol/l, Hematocirt < 0.295, BUN > = 10.7 mmol/l | < 0.0001 | 24 | 10 | 41.7 |
Laing et al. 2004 [22] | 2 | Patient factors: Age, Duration of fever, COPD, PSI, Cerebrovascular disease, Complications of pneumonia, Heart failure, Ethnicity, Bacteraemia, Diabetes Process of care measures: Duration of IV antibiotics, Admission to ICU, Antibiotic guideline adherence, Macrolide and beta-lactam | < 0.01 | 61 Of which: Patient factors – 34 POC measures – 26 | 1 | 1.6 |