Table 3 Performance of LAM for diagnosing confirmed TB and the composite outcome of confirmed and probable TB

Value (95% CI)

Value (95% CI)

Sensitivity

50.0% (21.1 to 78.9%)

47.6% (25.7 to 70.2%)

Specificity

84.2% (68.8 to 94.0%)

93.1% (77.2 to 99.2%)

Positive Likelihood Ratio

3.2 (1.3 to 8.0)

6.9 (1.7 to 28.3)

Negative Likelihood Ratio

0.6 (0.3 to 1.1)

0.6 (0.4 to 0.9)

Positive Predictive Value

50.0% (28.4 to 71.7%)

83.3% (55.0 to 95.4%)

Negative Predictive Value

84.2% (74.9 to 90.5%)

71.1% (61.7 to 78.9%)

Accuracy

76.0% (61.8 to 86.9%)

74.0% (59.7 to 85.4%)