Statistical analysis
Stata-13 software was used for data analysis. Central and dispersion indicators, frequencies, percentages, and tables described variables. The normal distribution of quantitative data was examined using the Kolmogorov–Smirnov test. Demographic variables between the two groups were compared by independent t-test, Mann–Whitney U test, Chi-square, and Fisher’s exact tests. The differences in self-efficacy scores and breastfeeding performance between the two groups were evaluated by the analysis of variance (ANCOVA). A significant level of 