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Table 1 Positivity yield by different bacteriological testing strategies among pulmonary TB patients in Tianjin China, 2017–2018

From: Comparison of different bacteriological testing strategies and factors for bacteriological confirmation among pulmonary TB patients: a retrospective study in Tianjin, China, 2017–2018

Testing strategy (n) Negativity n (%) Positivity n (%)
Smear (6364) 3618 (56.9) 2746 (43.1)
Culture (5853) 2473 (42.3) 3380 (57.7)
Xpert (2605) 997 (38.3) 1608 (61.7)
Smear+culture (5853) 2162 (36.9) 3691 (63.1)
Smear+Xpert (2605) 838 (32.2) 1767 (67.8)
Xpert+culture (2484) 702 (28.3) 1782 (71.7)
Smear+culture+Xpert (2484) 660 (26.6) 1824 (73.4)