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Table 3 Basis for TB treatment among 1176 HIV-infected subjects with CD4 ≥ 200/mm3

From: Basis for treatment of tuberculosis among HIV-infected patients in Tanzania: the role of chest x-ray and sputum culture

Category No. (%) Microbiology*
   AFB positive only Culture positive only Both positive Any positive
No TB 1040 (88%)     
TB 136 (12%) 2/124 (2%) 23/106 (22%) 13/106 (12%) 38/136 (28%)
Symptoms (fever or cough ≥ 2 wks) 11/136 (8%) 0/5 (0%) 1/4 (25%) 0/4 (0%) 1/5 (20%)
Abnormal chest x-ray 68/136 (50%) 0/62 (0%) 7/54 (13%) 3/54 (6%) 10/62 (16%)
Symptoms and chest x-ray 44/136 (32%) 2/44 (5%) 6/35 (17%) 6/35 (17%) 14/44 (32%)
Microbiology only 13/136 (10%) 0/13 (0%) 9/13 (69%) 4/13 (31%) 13/13 (100%)
  1. AFB = acid fast bacillus.
  2. * Denominators for microbiology represent proportion in each category who had the given test performed (e.g. 124 subjects had AFB smear performed but only 106 had sputum culture performed).