Table 4.
Outcome | No LAAO | LAAO | Absolute Rate Difference (95% CI)a | Incident Rate Ratio (95% CI) | P Value | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
No. of Patients | No. of Events | Person-Years | Event Ratea | No. of Patients | No. of Events | Person-Years | Event Ratea | ||||
AF-Related Outpatient Visits | |||||||||||
Overall | 4295 | 79951 | 7792 | 10.26 | 4295 | 96 676 | 8083 | 11.96 | 1.70 (1.60–1.80) | 1.17 (1.10–1.24) | <.001 |
AF at baseline | 3219 | 75 825 | 5782 | 13.11 | 3219 | 90 927 | 6171 | 14.74 | 1.62 (1.49–1.76) | 1.12 (1.06–1.19) | <.001 |
No AF at baseline | 1076 | 4126 | 2010 | 2.05 | 1076 | 5749 | 1912 | 3.01 | 0.95 (0.85–1.05) | 1.46 (1.10–1.96) | .01 |
AF-Related Hospitalization | |||||||||||
Overall | 4295 | 2473 | 7792 | 0.32 | 4295 | 2891 | 8083 | 0.36 | 0.04 (0.02–0.06) | 1.13 (1.05–1.21) | .002 |
AF at baseline | 3219 | 2360 | 5782 | 0.41 | 3219 | 2738 | 6171 | 0.44 | 0.04 (0.01–0.06) | 1.09 (1.01–1.17) | .03 |
No AF at baseline | 1076 | 113 | 2010 | 0.06 | 1076 | 153 | 1912 | 0.08 | 0.02 (0.01–0.04) | 1.42 (1.01–2.00) | .04 |
Abbreviations: AF, atrial fibrillation; LAAO, surgical occlusion of the left atrial appendage.
Calculated as the number of events per person-year.