Table 4.
Association Between CW Alert Adherence and 30-Day Readmissiona
| Multivariate OR (95% CI) |
P | |
|---|---|---|
| CW alert nonadherence | 1.14 (0.998–1.31) | .0503 |
| APR-DRG severity level | ||
| Level 1 (minor) | 1 (reference) | |
| Level 2 (major) | 1.85 (1.61–2.12) | <.001 |
| Level 3 (severe) | 3.12 (2.71–3.59) | <.001 |
| Level 4 (extreme) | 2.71 (2.32–3.17) | <.001 |
| Log number of diagnoses | 1.19 (1.12–1.26) | <.001 |
| Medicare | 1.14 (1.06–1.22) | .05 |
| Interaction: length of stay and log number of diagnoses | 1.23 (1.18–1.29) | <.001 |
APR-DRG, All Patients Refined Diagnosis Related Groups; CW, Choosing Wisely; OR, odds ratio.
a
Logistic regression was used to estimate the probability of a readmission within 30 days. The readmissions model had a C statistic of 0.65, and the Hosmer-Lemeshow goodness of fit test using 6 groups was not significant (P = .81), indicating no evidence of poor fit. The link function used was the logit function. The error distribution is assumed to be Bernoulli. One variable was log-transformed: number of diagnoses.