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Table 1 Results of CXR examination stratified by culture in TB suspects excluding those who were smear-positive on ZN microscopy. (N = 657).

From: The role and performance of chest X-ray for the diagnosis of tuberculosis: A cost-effectiveness analysis in Nairobi, Kenya

 

Total (N = 657)

Culture positive (N = 226)

Culture negative (N = 431)

a) Highly consistent for TB

152 (100%)

109 (72%)

43 (28%)

b) Consistent for TB

171 (100%)

71 (42%)

100 (58%)

c) Pathology, but no TB

22 (100%)

6 (27%)

16 (73%)

d) No pathology

312 (100%)

40 (13%)

272 (87%)

" TB"*: (a+b)

323 (100%)

180 (56%)

143 (44%)

" no-TB": (c+d)

334 (100%)

46 (14%)

288 (86%)

  1. * Smear-negative pulmonary TB