Conclusion
Our review confirmed that, treatment non-adherence and lost to follow up were continued across the studies’ publication years in developing countries. Majority of studies reported non-adherence and lost to follow up were occurred in continuation phase. Socioeconomic factors (age gender, lack of food, transportation cost, social support and job), and individual behavioral factors (fear of stigma, feeling better after few weeks of treatment, tobacco and alcohol use), patient knowledge about TB disease and its treatment, consequences of non-adherence and lost to follow up were associated with non-adherence and lost to follow up. Beside socioeconomic and behavioral factors, patient-health care worker poor communication, distance from treatment center and both TB and HIV medications side effects were associated with TB treatment non-adherence and lost to follow up.