Table 1. Definition of Treatment Outcomes.
Outcomes at the end of treatment | Definition |
---|---|
Failure | AFB microscopies or cultures positive at five months or later during treatment. |
Cure | Treatment completed with disappearance of signs and symptoms and two or more AFB smears or cultures with negative results at the end of therapy. |
Treatment completion | Completion of treatment without meeting the criteria to be classified as a cure or a failure. |
Death during treatment | Death due to any cause during therapy.[18] |
Default | Interruption of treatment for two consecutive months or more.[18] |
Transfer out | Patient transferred to another institution outside of the study region. |
Outcomes after treatment was completed | |
Recurrence | A second or subsequent episode of TB confirmed by AFB smear or culture in a patient with a history of prior treatment.a |
Relapse | TB disease confirmed by AFB smear or culture that occurred after a patient was considered to have completed treatment or to have been cured.[18] |
Reinfections | Subsequent TB episodes with the same genotype: six or more IS6110 bands in an identical pattern, or < 6 bands with identical IS6110 RFLP patterns and a spoligotype with the same spacer oligonucleotides. |
Deaths after TB treatment was completed | |
Death due to TB | Deaths were attributed to TB based on two of the following: death certificate with TB as the main cause of death; interview with a close caregiver who identified TB as a probable cause of death; or positive AFB smear or culture at the time of death. |
Death due to any cause | Death without specifying cause |
a Relapse patients are included within recurrent TB.