Table 2 Summary estimates of sensitivity and specificity calculated by a bivariate random-effects model
From: The Alvarado score for predicting acute appendicitis: a systematic review
| Â | Studies | n | Sensitivity (95% CI) | Variance logit (sensitivity) | Specificity (95% CI) | Variance logit (specificity) |
|---|---|---|---|---|---|---|
Observation/ Admission (Cut point 5) | All studies | 28 | 0.99 (0.97 to 0.99) | 3.37 | 0.43 (0.36 to 0.51) | 0.61 |
| Â | Men | 5 | 0.96 (0.88 to 0.99) | 1.09 | 0.34 (0.24 to 0.47) | 0.06 |
| Â | Women | 5 | 0.99 (0.92 to 0.99) | 2.12 | 0.35 (0.14 to 0.64) | 1.51 |
| Â | Children* | 9 | 0.99 (0.83 to 1.00) | 8.99 | 0.57 (0.41 to 0.72) | 0.79 |
Surgery (Cut point 7) | All studies | 29 | 0.82 (0.76 to 0.86) | 0.48 | 0.81 (0.76 to 0.85) | 0.46 |
| Â | Men | 6 | 0.88 (0.75 to 0.95) | 1.15 | 0.57 (0.40 to 0.73) | 0.44 |
| Â | Women | 7 | 0.86 (0.78 to 0.92) | 0.44 | 0.73 (0.58 to 0.84) | 0.62 |
| Â | Children* | 9 | 0.87 (0.76 to 0.93) | 0.98 | 0.76 (0.55 to 0.89) | 1.50 |