Send to

Choose Destination
Int J Tuberc Lung Dis. 2010 Feb;14(2):241-2.

Timing of relapse in short-course chemotherapy trials for tuberculosis.

Author information

Clinical Trials Unit, Medical Research Council, London, UK.


We have reviewed the results from 15 tuberculosis treatment trials initiated by the British Medical Research Council between 1970 and 1983 in Africa and East Asia. Of 574 relapses, 447 (78%) occurred within 6 months of stopping treatment and 525 (91%) within 12 months. We suggest that investigators should consider terminating follow-up after the last enrolled patient completes 6 months following treatment, while continuing to follow patients enrolled earlier until that time. Compared to following all patients to 24 months, the total trial duration could be reduced by 18 months, with no increase in patient numbers in a non-inferiority design.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Ingenta plc
Loading ...
Support Center