Table 2.
Rate ratio of emergency department visit or hospitalization for atrial fibrillation in patients hospitalized for acute exacerbation of chronic obstructive pulmonary disease (n=944)
| Days from the index hospitalization | Number of outcome events | Rate (per 100 person-months) | Rate ratio* (95% CI) | P value |
|---|---|---|---|---|
| Pre-AECOPD period | ||||
| −1 to −90 days | 207 | 7.3 | 1 (reference) | - |
| Post-AECOPD period | ||||
| 1 to 90 days | 400 | 14.1 | 1.93 (1.63–2.29) | <0.001 |
| 91 to 180 days | 213 | 7.5 | 1.03 (0.85–1.25) | 0.77 |
| 181 to 270 days | 173 | 6.1 | 0.84 (0.68–1.03) | 0.09 |
| 271 to 360 days | 186 | 6.6 | 0.90 (0.73–1.10) | 0.29 |
Abbreviations: AECOPD, acute exacerbation of chronic obstructive pulmonary disease; CI, confidence interval
*
Rate ratios were calculated by using conditional Poisson regression models