Sampling
anxiety, ’s State-Trait Anxiety
BSE
The sampling was done after obtaining the permission from the ethics committee of Tabriz University of Medical Sciences (IR.TBZMED.REC.1399.1078) and a referral letter from the research deputy of the Faculty of Nursing and Midwifery in Tabriz. There are 80 health centers in Tabriz, where the details of all breastfeeding women, including contact number and address are available. The researcher attended the health centers and extracted a list of all breastfeeding women (first and second birth) who gave birth in the last month, along with their contact number and address. Then, she called the selected women, briefly explained the objectives and methods of the study, and asked them to attend the health center at a certain time if they want to participate in the study. Women willing to participate in the study were examined in terms of the inclusion and exclusion criteria and eligible individuals were selected. In the first briefing session, the objectives and methods of the study were fully explained, the inclusion criteria were evaluated, and written informed consent form was obtained from eligible women. Women with an anxiety score of 43—53 were included in the study. Then, the pre-test questionnaires, including socio-demographic and obstetric characteristics, Spielberger’s State-Trait Anxiety Inventory (STAI), postpartum distress (PDM), and breastfeeding self-efficacy (BSE) were completed by interview.