Table 1:

Classification criteria of participants based on combinations of clinical and microbiological findings.

Classification:	Definition:
Definite TB	2 positive sputum cultures, or 1 positive culture and CXR suggestive of TB.
Probable TB	2 positive smears or 1 culture, without documented CXR
	evidence, but symptoms responding to TB treatment, or 1 positive smear with CXR consistent with PTB.
Questionable diagnosis	Positive smear(s), but no other supporting evidence, or CXR suggestive of TB, but no other supporting evidence.
No TB	Negative cultures, negative smears, negative CXR leading to an alternate diagnosis.