Variables | Sensitivity (95% CI) | Specificity (95% CI) | Meta-regression (p value) | |
---|---|---|---|---|
Probe frequency | ≥ 15 MHz | 0.84 (0.75–0.89) | 0.93 (0.85–0.97) | 0.88 |
< 15 MHz | 0.82 (0.69–0.90) | 0.92 (0.86–0.95) | ||
Study design | Prospective | 0.72 (0.61–0.81) | 0.99 (0.82–0.92) | 0.44 |
Retrospective | 0.78 (0.69–0.85) | 0.93 (0.90–0.97) | ||
Risk of bias | Low | 0.82 (0.77–0.86) | 0.93 (0.88–0.96) | 0.046 |
Moderate-high | 0.71 (0.57–0.82) | 0.88 (0.83–0.93) |