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Iranian researchers have investigated breastfeeding self-efficacy and its related factors. However, there is no valid and reliable tool for assessing the breastfeeding self-efficacy of Iranian Farsi-speaking women.

To examine the validity and reliability of the Breastfeeding Self-Efficacy Scale—Short Form among Iranian Farsi-speaking mothers.

We conducted this cross-sectional study at Izadi teaching hospital in Qom, Iran. Using convenience sampling, we recruited 174 mothers, who completed the questionnaire on the first postnatal day. A forward–backward translation method was used to translate the scale. Cronbach’s alpha and item-total characteristics were examined to test reliability. Construct validity was evaluated via principal component analysis (PCA), as well as known-groups validity.

The mean (standard deviation) of sample age was 28.33 (5.38). The mean …