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Table 1 Positivity of sputum samples analyzed by LED-FM, cZN, Xpert and LJ culture singly and in combination. PPV: positive predictive value, NPV: negative predictive value, CI: confidence interval, AIDS: acquired immunodeficiency syndrome, HIV: human immunodeficiency virus

From: Light-emitting diode fluorescent microscopy and Xpert MTB/RIF® assay for diagnosis of pulmonary tuberculosis among patients attending Ambo hospital, west-central Ethiopia

 

LED-FM (n = 362)

Xpert (n = 362)

cZN (n = 362)

LJ culture (n = 332)

positive

negative

positive

negative

positive

negative

positive

negative

LED-FM

positive (36)

  

36

0

36

0

35

0

negative

  

14

312

6

320

10

287

Xpert

positive(50)

36

14

  

42

8

42

6

negative

0

312

  

0

312

3

281

cZN

positive (42)

36

6

42

0

  

37

3

negative

0

320

8

312

  

8

284

LJ culture

positive

35

10

42

3

37

8

  

negative

0

287

6

281

3

284