The Application of GeneXpert MTB/RIF for Smear-Negative TB Diagnosis as a Fee-Paying Service at a South Asian General Hospital
Table 3
Number of patients detected as positive by GeneXpert using different inclusion criteria for testing.
Patients
Number of patients with information (%)
Number of patients tested
Numbers of Xpert positive (%)
Number needed to test
Numbers of patients not meeting the criteria
Xpert positive in group not meeting criteria (%)
At least 2
251 (93.7)
232
50 (21.6)
4.6
19
3 (15.8)
At least 2 symptoms +
187 (72.5)
163
36 (22.1)
4.5
24
3 (12.5)
At least the 4 listed CXR abnormalities
187 (72.5)
152
38 (25.0)
4.0
35
1 (2.9)
7 patients had no available information of symptoms and were therefore excluded. 71 patients did not have information of CXR report and were therefore excluded.