Koroto., Tadewos (PhD)Alemayehu, Daniel2021-12-132023-11-092021-12-132023-11-092001-05http://10.90.10.223:4000/handle/123456789/29262The benefi ts of breast-feeding for the health of the infant, as an inexpensive and appropriate source of nutrients, for its simulation of a strong relationship between the mother and the child, and as a major source of protection against pregnancy through suppression of ovulation have been very well documented. But, only few have attempted to examine the factors that determine the duration of brca s t-fcc~ i ng in Ethiopia. Thus using the appropriate stati stical model thi s study analyzes the socio-demographic factors that determine the duration ofbrcaslfeeding in Urban Addis Ababa. Data on breast-feeding from the 1995 Fertility Survey of Urban Addis Ababa carried out by the Central Stati sti cal Authori ty is used for the analysis. The breast-feeding duration of the 31.78% of the mothers is found censored. Therefore, for the overall examination of the factors the Cox-regression model is used. The prevalence and the med ian duration ofhreast-feeding using the Kaplan-Meier method are estimated to be 95% and 14 months, respect ively. The log-rank test is used to examine the breast-feeding differentials. To know the joint e ffect of the factors and to identify the more important factors a multivariate analysis is undertaken. An approach based on statistical modelling without prioritizing the variables, the ' Hierarchic' method is employed. The final Cox's regression model shows that educational level of the mother is the variable which signi ficantly affects the duration of breast-feeding. It is this variable with a negative associat ion that best detennincs the breast-feeding durat ion. The shortest duration is observed for mothers with higher levels of education. Finally, re levant discussion is made and the focus group to which effective breast-feeding promotion campaign should be targeted is recommended.enSurvival Models:Thesis