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Table 5 Multivariate analyses of independent risk factors for 30-day hospital readmission*

From: Clinical implications for patients treated inappropriately for community-acquired pneumonia in the emergency department

Variable Adjusted odds ratio 95% CI P value
Antibiotic exposure in previous 30 days 2.12 1.45 – 3.10 0.047
Peripheral vascular disease 3.64 2.27 – 5.84 0.006
CURB 65 (1-point increments) 1.46 1.27 – 1.68 0.007
  1. *Other covariates not in the table had a p value >0.05 including inappropriate initial antibiotic treatment, age, chronic dialysis, intensive care unit admission, COPD, congestive heart failure, and the Charlson score (Hosmer-Lemeshow goodness-of-fit test, p = 0.431). ICU = intensive care unit; COPD = chronic obstructive pulmonary disease, CURB65 = confusion of new onset, urea greater than 7 mmol/l, respiratory rate of 30 breaths per minute or greater, blood pressure less than 90 mmHg systolic or diastolic blood pressure 60 mmHg or less, age 65 or older.