Table 1 Performance of MeltPro for detecting rifampin-resistance.

From: Rapid diagnosis of MDR and XDR tuberculosis with the MeltPro TB assay in China

Pilot

MeltPro

DST

Total

Sensitivity (%, 95% CI)

Specificity (%, 95% CI)

PPV (%, 95% CI)

NPV (%, 95% CI)

R

S

Shandong

R

107

15

122

96.4(91.1–98.6)

97.6(96.0–98.2)

87.7(80.7–92.4)

99.2(98.2–99.7)

S

4

601

605

Total

111

616

727

Guangzhou

R

155

17

172

92.8(87.9–95.8)

97.4(95.8–98.4)

90.1(84.7–93.7)

98.2(96.8–99.0)

S

12

630

642

Total

167

647

814

Total

R

262

32

294

94.2(90.9–96.4)

97.5(96.4–98.2)

89.1(85.0–92.2)

98.7(97.9–99.2)

S

16

1231

1247

Total

278

1263

1541

  1. Abbreviations: DST = drug susceptibility test, R = resistant, S = sensitive, PPV = positive predictive value, NPV = negative predictive value.