Patient Categorisation and Treatment Outcomes
Patients treated for TB infection may be categorised either as new or previously treated. The treatment outcome possibilities are completed, lost to follow-up, stopped or died as described in Table 2 . Table 2. Patient categories and treatment outcomes Category definition New Never had TPT or who took treatment for less than four weeks. Previously treated Past TPT or another regimen for four or m
Patients treated for TB infection may be categorised either as new or previously treated. The treatment outcome possibilities are completed, lost to follow-up, stopped or died as described in Table 2.
Table 2. Patient categories and treatment outcomes
| Category definition | |
| New | Never had TPT or who took treatment for less than four weeks. |
| Previously treated | Past TPT or another regimen for four or more weeks and either completed or stopped for any reason (e.g. due to adverse events, developed TB, lost to follow-up) |
| TB Preventive Treatment (TPT) outcomes | |
| Treatment completed | Individual who has taken treatment and completed preventive treatment within the prescribed period. |
| Lost to follow-up | An individual whose treatment was interrupted for four weeks or more (if on four or more months regimen) OR two consecutive months (if on a six-month regimen) OR three consecutive months (if on a 12-month regimen) during the treatment period. |
| Treatment stopped | An individual whose treatment was stopped during the treatment period, because of serious adverse events or development of TB disease. |
| Died | Death for any reason during the treatment |
National Guidelines on the Treatment of Tuberculosis Infection, February 2023
Patient Categorisation and Treatment Outcomes