Table 2. Summary of Two Glimmix Logistical Models of 30-Day Readmission Risk
FactorOdds RatioConfidence Interval
Model 1
    High Charlson1.601.03–2.48
    Polypharmacy2.041.20–3.47
    HF, PNA, or COPD1.360.87–2.14
Model 2†
    High Charlson1.721.12–2.63
    Polypharmacy2.211.31–3.70

  • There were two Charlson score groups: 0–4 and ≥5. Polypharmacy means the use of ≥6 medications.

  • COPD, chronic obstructive pulmonary disease; HF, heart failure; PNA, pneumonia.

  • * Model 2 readmission logit = β0 + β1 Charlsoni + β2 Polypharmacyi + ϵi; β0 (standard error [SE]) = 1.4475 (0.1610); β1 (SE) = 0.5446 (0.2170); β2 (SE) = 0.7924 (0.2638). ϵi Differs for each patient.