Table 4.
Subpopulation analysis showing the effect of African American race on prevalence of atrial fibrillation.
| Subpopulation (Ref. #) | AA AF% | Caucasian AF% | Sample size | OR (95% CI) | P value |
|---|---|---|---|---|---|
| Age > 50 years [16, 17] | 2.0% | 2.6% | 574,700 | 0.66 (0.61–0.71) | <0.001 |
| Hospitalized or elderly [7, 21, 22]* | 3.9% | 8.4% | 239,623 | 0.46 (0.36–0.59) | <0.001 |
| Post-CABG surgery [23, 24] | 18% | 25% | 3,577 | 0.62 (0.52–0.76) | <0.001 |
| Heart failure [18, 19] | 20% | 38% | 1,536 | 0.39 (0.29–0.54) | <0.001 |
*Utilized the Mantel-Haenszel method, carrying out a random effects model, given that the test for heterogeneity is statistically significant; Q = 8.7242; DF = 2; I 2 = 77.1%; P = 0.0128. AA = African American; AF = atrial fibrillation; CABG = coronary artery bypass grafting; CI = confidence interval; OR = odds ratio.