What Works to Improve Duration of Exclusive Breastfeeding: Lessons from the Exclusive Breastfeeding Promotion Program in Rural Indonesia

Abstract
The aim of the study was to identify determinants of exclusive breastfeeding (EBF) at the individual, family, community, and organizational level. This study was a secondary analysis of data from a multilevel promotion of EBF program in two rural public health centers (PHCs) in the Demak district, Central Java, Indonesia. The program was a quasi-experimental study with a pretest–posttest control group. A total of 599 participants were enrolled, consisting of 163 mother infant pairs, 163 fathers, 163 grandmothers, 82 community leaders, and 28 midwives. EBF duration and its determinants were measured and analyzed using Cox proportional-hazard model. Mothers with a high level of breastfeeding knowledge had the greatest EBF duration. Mothers who had a knowledge score >80 had a 73 % (HR 0.27, 95 % CI 0.15, 0.48) greater chance of EBF compared to mothers who had a knowledge score of