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Table 1 Operational definitions of TB treatment outcomes

From: Tuberculosis treatment outcomes among prisoners and general population in Zomba, Malawi

CuredA pulmonary TB patient with bacteriologically confirmed TB at the beginning of treatment who was smear- or culture-negative in the last month of treatment and on at least one previous occasion.
Treatment completedA TB patient who completed treatment without evidence of failure but with no record to show that sputum smear or culture results in the last month of treatment and on at least one previous occasion were negative, because tests were not done or because results are unavailable.
Treatment successSum of cured and treatment completed.
Treatment failedTB patient whose sputum smear or culture is positive at month 5 or later during treatment.
DiedTB patient who dies for any reason before starting or during the course of treatment.
Loss To Follow UpTB patient who did not start treatment or whose treatment was interrupted for 2 consecutive months or more.
Not EvaluatedTB patient for whom no treatment outcome is assigned. This includes cases “transferred out” to another treatment unit as well as cases for whom the treatment outcome is unknown to the reporting unit.