Table 4.
Association of AF With Inpatient (MedPAR) and Outpatient Healthcare Utilization Among Atherosclerosis Risk in Communities Participants Stratified by Race
| White | Black | |||
|---|---|---|---|---|
| AF (n=809) | No AF (n=2344) | AF (n=123) | No AF (n=385) | |
| Follow‐up, years (mean±SD) | 4.2±3.6 | 4.3±3.6 | 3.6±3.2 | 4.0±3.6 |
| Inpatient (MedPAR) utilization, days | ||||
| Per person, median (IQR)* | 10 (0 to 29) | 0 (0 to 7) | 8 (0 to 37) | 0 (0 to 5) |
| Unadjusted rate* | 12.5 (10.9 to 14.3) | 2.8 (2.5 to 3.1) | 17.8 (12.0 to 26.3) | 3.2 (2.3 to 4.5) |
| Unadjusted rate ratio | 4.70 (3.87 to 5.70) | Reference | 5.64 (3.15 to 10.09) | Reference |
| Rate ratio adjusted for matching criteria* | 4.70 (3.87 to 5.71) | Reference | 5.69 (3.17 to 10.23) | Reference |
| Fully adjusted rate ratio* | 3.94 (3.25 to 4.77) | Reference | 4.69 (2.59 to 8.50) | Reference |
| Outpatient utilization* | ||||
| Per person, median (IQR)* | 127 (49 to 236) | 52.5 (18 to 118) | 94 (33 to 176) | 37 (8 to 97) |
| Unadjusted rate* | 53.2 (50.3 to 56.3) | 23.2 (22.3 to 24.1) | 53.9 (45.5 to 63.9) | 21.3 (18.8 to 24.0) |
| Unadjusted rate ratio | 2.30 (2.14 to 2.47) | Reference | 2.55 (2.02 to 3.22) | Reference |
| Rate ratio adjusted for matching criteria* | 2.29 (2.13 to 2.46) | Reference | 2.57 (2.03 to 3.25) | Reference |
| Fully adjusted rate ratio* | 2.11 (1.96 to 2.26) | Reference | 2.37 (1.88 to 2.98) | Reference |
AF indicates atrial fibrillation; IQR, interquartile range; MedPAR, Medicare Provider Analysis and Review.
During follow‐up.
Rate per year.
Adjusted for matching criteria: age (within 2 years), sex, race, and field center.
Adjusted for matching criteria and for high school graduate, current smoking, current drinking, body mass index, hypertension, antihypertensive medication, diabetes mellitus, creatinine‐based estimated glomerular filtration rate, forced expiratory volume in 1 second, and prior heart failure and coronary heart disease.
Outpatient utilization defined as unique claims per date of service.