This study examined the relationship between menstrual hygiene practices, socio-demographic factors, and reproductive tract infections (RTIs) among 965 married women ages 15-49 living in slum settlements near Dehradun, India. The researchers found significant associations between menstrual hygiene practices (such as cloth use during menstruation) and women's literacy, religion, socioeconomic status, and experiences of RTI symptoms. Poor menstrual hygiene was found to be a key determinant of these women's reproductive health needs and risk of RTIs, with their practices influenced by various socio-demographic attributes.