Summary of pooled diagnostic accuracy indices
| Variables | No. studies | Sensitivity (95% CI) | Specificity (95% CI) | Likelihood ratio+ | Likelihood ratio− | AUROC (95% CI) | I2 (95% CI) | Diagnostic OR (95% CI) | Meta-regression p value | Egger's test p value |
|---|---|---|---|---|---|---|---|---|---|---|
| Overall10 12–19 | 9 | 0.71 (0.63 to 0.78) | 0.72 (0.61 to 0.81) | 2.57 (1.86 to 3.55) | 0.40 (0.32 to 0.50) | 0.77 (0.73 to 0.81) | 14.6 (0 to 56.6) | 5.91 (4.07 to 8.59) | – | 0.566 |
| Follow-up time <6 months10 14 16 19 | 4 | 0.73 (0.56 to 0.85) | 0.71 (0.54 to 0.83) | 2.50 (1.67 to 3.77) | 0.38 (0.24 to 0.59) | 0.78 (0.74 to 0.82) | 0.0 (0.0 to 74.6) | 6.34 (3.70 to 10.85) | 0.759 | 0.345 |
| Follow-up time >1 year12–14 17 18 | 5 | 0.77 (0.69 to 0.84) | 0.65 (0.45 to 0.80) | 2.22 (3.14 to 12.88) | 0.35 (0.26 to 0.48) | 0.79 (0.75 to 0.82) | 34.8 (0.0 to 77.2) | 5.54 (3.29 to 9.32) | 0.552 | 0.583 |
| Electric cardioversion10 12 14–16 18 19 | 7 | 0.72 (0.62 to 0.80) | 0.74 (0.60 to 0.85) | 2.81 (1.79 to 4.41) | 0.38 (0.29 to 0.50) | 0.78 (0.75 to 0.82) | 33.0 (0.0 to 71.6) | 5.13 (3.63 to 7.25) | 0.611 | 0.198 |
| Persistent AF10 12 14–16 18 19 | 7 | 0.70 (0.61 to 0.78) | 0.71 (0.59 to 0.80) | 2.40 (1.77 to 3.25) | 0.42 (0.33 to 0.53) | 0.76 (0.72 to 0.80) | 22.3 (0.0 to 64.2) | 5.70 (3.77 to 8.62) | 0.899 | 0.464 |
AF, atrial fibrillation; AUROC, area under receiver operating characteristic curve.