Figure 2.

Unadjusted all-cause 30-day readmission rates for arformoterol-treated and nebulized SABA-treated patients by APR-DRG severity.

Notes: Unadjusted comparisons within each APR-DRG severity class were completed using chi-square tests. In the multivariate logistic regression that adjusted for initial admission differences, the odds for readmission were 31% lower (odds ratio 0.69, 95% confidence interval 0.51–0.92) for patients treated with arformoterol than for patients treated only with neb-SABA.

Abbreviations: APR-DRG, 3M™ All Patient Refined™-Diagnosis Related Groups; neb-SABA, nebulized short-acting β₂ agonist.