Sign or symptom | No. of studies | No. of patients | Sensitivity (95% CI) | Specificity (95% CI) | +LR (95% CI) | -LR (95% CI) |
---|---|---|---|---|---|---|
Absence of cough | 19 | 4,653 | 0.74 (0.68 to 0.79) | 0.49 (0.40 to 0.58) | 1.46 (1.28 to 1.66) | 0.53 (0.46 to 0.61) |
Fevera | 21 | 4,635 | 0.50 (0.39 to 0.62) | 0.70 (0.58 to 0.79) | 1.65 (1.40 to 1.95) | 0.71 (0.64 to 0.80) |
Anterior cervical adenopathyb | 9 | 2,101 | 0.65 (0.55 to 0.74) | 0.55 (0.45 to 0.64) | 1.45 (1.25 to 1.67) | 0.63 (0.52 to 0.76) |
Tender anterior cervical adenopathyb | 16 | 4,144 | 0.67 (0.52 to 0.79) | 0.59 (0.49 to 0.69) | 1.65 (1.41 to 1.92) | 0.56 (0.41 to 0.76) |
Any exudatesc | 21 | 4,839 | 0.57 (0.44 to 0.70) | 0.74 (0.63 to 0.82) | 2.20 (1.76 to 2.74) | 0.58 (0.47 to 0.72) |