Table 2.
Incidence of Mortality and Adverse Events in Newly-Diagnosed AF by Treating Specialty
| Full Cohort | Total (N=184,161) |
Primary Care Only (N=114,260) |
Cardiology Care (N=69,901) |
||||
|---|---|---|---|---|---|---|---|
| N (%) | IR* | N (%) | IR* | N (%) | IR* | P value | |
| Stroke | 6,364 (3.5) | 8.4 | 4,230 (3.7) | 8.8 | 2,134 (3.1) | 7.6 | <0.0001 |
| Overall Mortality | 61,677 (33.5) | 79.5 | 41,977 (36.7) | 85.3 | 19,700 (28.2) | 69.4 | <0.0001 |
| Cardiovascular mortality! | 13,641 (7.4) | 17.6 | 9,240 (8.1) | 18.8 | 4,401 (6.3) | 15.5 | <0.0001 |
| TIA | 2,300 (1.3) | 3.0 | 1,462 (1.3) | 3.0 | 848 (1.2) | 3.0 | 0.87 |
| Heart Failure | 33,028 (17.9) | 47.4 | 19,614 (17.2) | 44.1 | 13,414 (19.2) | 53.4 | <0.0001 |
| AF/SVT | 36,068 (19.6) | 55.1 | 18,521 (16.2) | 43.1 | 17,547 (25.1) | 78.2 | <0.0001 |
| Myocardial Infarction | 33,640 (18.3) | 50.1 | 19,701 (17.2) | 45.7 | 13,939 (19.9) | 57.8 | <0.0001 |
|
| |||||||
| Propensity Matched Cohort |
Total (N=106,080) |
Primary Care Only (N=53,040) |
Cardiology Care (N=53,040) |
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| N (%) | IR* | N (%) | IR* | N (%) | IR* | P value | |
|
| |||||||
| Stroke | 3,540 (3.3) | 8.0 | 1,908 (3.6) | 8.4 | 1,596 (3.0) | 7.5 | 0.0003 |
| Overall Mortality | 33,308 (31.4) | 74.4 | 18,175 (34.3) | 78.5 | 15,133 (28.5) | 70.0 | <0.0001 |
| Cardiovascular mortality† | 7,432 (7.0) | 16.6 | 4,034 (7.6) | 17.4 | 3,398 (6.4) | 15.7 | <0.0001 |
| TIA | 1,371 (1.3) | 3.1 | 705 (1.3) | 3.1 | 666 (1.3) | 3.1 | 0.88 |
| Heart Failure | 20,572 (19.4) | 51.8 | 10,206 (19.2) | 49.5 | 10,366 (19.5) | 54.4 | <0.0001 |
| AF/SVT | 23,828 (22.5) | 65.0 | 10,245 (19.3) | 52.1 | 13,583 (25.6) | 79.9 | <0.0001 |
| Myocardial Infarction | 21,315 (20.1) | 55.9 | 10,530 (19.9) | 53.1 | 10,785 (20.3) | 58.9 | <0.0001 |
AF: atrial fibrillation, IR: incidence rate, SVT: supraventricular tachycardia, TIA: transient ischemic attack
*
Incidence per 1,000 person-years,
†
Death preceded by cardiovascular hospitalization within 30 days