From: Comparison of loop-mediated isothermal amplification assay and smear microscopy with culture for the diagnostic accuracy of tuberculosis
Culture+
Culture–
Se % (95% CI)
Sp % (95% CI)
PPV (%)
NPV (%)
κ
2tests in serial
Pos
19
0
67.8(49.3–82.1)
100(92.3–100)
100
84.7
0.83
Neg
9
50
2tests in parallel
24
2
85.7(68.5–94.3)
96(86.5–98.9)
92.3
0.786
4
48