Abstract
This paper estimates the mean monthly losses and proportionate interruptions of breastfeeding intervals due to child death and pregnancy. The paper uses a microanalytic model with stochastic risks for the basic processes of human reproduction. The model results show that a high proportion of women, depending upon mortality level and length of breastfeeding, have their breastfeeding interrupted by either child death or pregnancy. The results of this work suggest the need for caution in interpreting observed durations of breastfeeding. Child death and pregnancy causes bias in the reported length of breastfeeding, and this bias needs to be taken into account in statistical analysis.