From: Direct microscopy versus sputum cytology analysis and bleach sedimentation for diagnosis of tuberculosis: a prospective diagnostic study
Able to produce three samples (n [%])
Able to produce two or more samples (n [%])
Unable to produce any samples (n [%])
Before SCA
195 (69.6%)
237 (84.6%)
12 (4.3%)
After SCA
212 (75.7%)
246 (87.9%)
9 (3.2%)