Table 2. Multivariable Adjusted Logistic Regression Analysis of Time-by-Group Interactionsa.
| Preoperative Care | Adjusted Odds Ratio (95% CI) | |
|---|---|---|
| After vs Before Intervention vs Control Group Multivariable | Follow-up vs Before Intervention vs Control Group Multivariable | |
| Medical visits | 0.02 (0.01 to 0.05) | 0.03 (0.01 to 0.09) |
| Chest x-rays | 0.02 (0.01 to 0.04) | 0.01 (<0.01 to 0.01) |
| Laboratory testing | 0.04 (0.01 to 0.15) | 0.02 (0.01 to 0.06) |
| Electrocardiograms | 0.01 (<0.01 to 0.02) | <0.01 (<0.01 to 0.01) |
a
Multivariable logistic regression models adjusted for patient age at time of surgery, sex, race/ethnicity, and Charlson comorbidity index, and interacted time by group for each outcome.