RESUMEN
This study was conducted as a randomized controlled study to determine the effect of nursing interventions, which were based on Dennis's Breastfeeding Self-Efficacy Theory and Pender's Health Promotion Model during home visits, on the breastfeeding self-efficacy and success of immigrant women living in Northern Cyprus. The sample consisted of N = 60 primipar immigrant women (experimental group n = 30, control group n = 30) who attended a primary healthcare center in Northern Cyprus between April 2019 and January 2020. The data were collected from the participants using a Socio-Demographic Questionnaire, the Breastfeeding Self-Efficacy Scale and the LATCH Breastfeeding Assessment Tool. Before the study, no statistically significant difference was found between two groups in terms of breastfeeding self-efficacy and the LATCH assessment (p > 0.05). After the intervention, the mean score for the Breastfeeding Self-Efficacy Scale increased by 9.73 in the experimental group and 3.16 in the control group compared to before the study, and the effect size was found to be 6.57. The score for the LATCH assessment increased by 3.2 in the experimental group and 1.44 in the control group, and the effect size was found to be 1.76 (p < 0.05).