Table 5s.
Subgroup Analysis of Weekly Hospital Admissions using a Differences-in-Difference-in-Differences Model
| Subgroup | COPD Admissions |
CHF, DM, and MI Admissions |
Difference-in-Differences-in-Differences | P Value | ||
|---|---|---|---|---|---|---|
| Pre-COVID-19 | Post-COVID-19 | Pre-COVID-19 | Post-COVID-19 | |||
| Charlson Comorbidity Index | Incidence rate ratio (95% CI) | |||||
| 0-3 | 56.6 | 25.3 | 107.0 | 85.1 | 0.60 (0.49 to 0.75) | <0.001 |
| 4 or more | 10.8 | 6.2 | 84.2 | 64.6 | Ref (1.00) | |
| Recurrent admissions | Incidence rate ratio (95% CI) | |||||
| Only 1 admission during study period | 52.2 | 23.7 | 153.1 | 123.4 | 0.66 (0.53 to 0.81) | <0.001 |
| More than 1 admission during study period | 15.2 | 8.04 | 37.7 | 26.6 | Ref (1.00) | |
CHF = congestive heart failure; COPD = chronic obstructive pulmonary disease; DM = diabetes mellitus; MI = myocardial infarction.