Results for studies on provision of second-line treatment for multidrug-resistant TB.

aStudies covering multiple sites or periods.bIncluding eight studies that evaluated treatment outcomes.cIncluding two studies that did so by (also) evaluating treatment outcomes.dStudies testing a hypothesis about measures to improve treatment completion or adherence.eAs specific study objective, no hypothesis testing about measures to improve treatment completion or adherence.fAlso addressing treatment outcomes.gNumber of studies evaluating effects on health.