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Table 2 Multivariate association of Xpert- MGIT discordant sputum test results versus Xpert-MGIT concordant negative results with demographic, clinical and laboratory variables, among 4486 Xpert and MGIT-tested participants of the second national tuberculosis prevalence survey in Vietnam

From: Discordant results of Xpert MTB/Rif assay and BACTEC MGIT 960 liquid culture to detect Mycobacterium tuberculosis in community screening in Vietnam

Factors

Xpert (+) – MGIT (−) (n = 73)

Xpert (−) – MGIT (+) (n = 81)

Adjusted OR (95% CI)

p-value

Adjusted OR (95% CI)

p-value

Male (vs. female)

5.0 (2.4–10.5)

 < 0.001

1.6 (0.9–2.6)

0.058

Night sweats (vs. none)

3.5 (1.7–7.3)

0.002

0.5 (0.1–2.3)

0.401

Abnormal chest X-ray (vs. none)

67.9 (9.4–492.3)

 < 0.001

13.8 (5.5–34.5)

 < 0.001

Area

 

0.114a

 

0.637a

 Urban

Ref

 

Ref

 

 Remote

0.5 (0.2–1.1)

0.067

1.3 (0.7–2.3)

0.431

 Rural

0.6 (0.4–1.1)

0.059

1.1 (0.6–1.8)

0.761

Laboratory

 

0.083a

 

0.798a

 National referral lab

Ref

 

Ref

 

 Da Nang

1.4 (0.6–3.0)

0.450

0.7 (0.3–1.7)

0.490

 Pham Ngoc Thach

1.0 (0.5–1.9)

0.998

1.2 (0.7–2.0)

0.614

 Can Tho

1.8 (0.9–3.5)

0.062

1.0 (0.5–2.0)

0.903

  1. Odds ratios are adjusted for all other variables in the model. Bold numbers indicate statistical significance
  2. aOverall p-value of factors