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Table 5 Comparison with AFB-negative results

From: The value of Xpert MTB/RIF assay of urine samples in the early diagnosis of smear-negative urinary tuberculosis

Tests

CRS + /AFB-

Relative share in (%)

CRS-/AFB-

Relative share in (%)

Total positive share in (%)

Xpert

6

31.6% (6/19)**

2

11.8% (2/17)

22.2 (8/36)*

Culture

1

6.2% (1/16)

0

− (0/5)

4.76 (1/21)

TB-DNA

4

26.7% (4/15)

0

− (0/7)

18.2 (4/22)

  1.  + positive − negative CRS composite reference standard AFB Acid-Fast Bacilli smears Xpert Xpert MTB/RIF assay culture culture for MTB TB-DNA Mycobacterium tuberculosis deoxyribonucleic acid
  2. *P < 0.05
  3. **P < 0.01