2.1. Recruitment

Recruitment flyers in English and Spanish were sent to three offices of the Special Supplemental Program for Women, Infants, and Children (WIC) in Rhode Island, US from September 2020 to February 2021. If mothers expressed interest in participating to WIC staff, their contact information was sent to the research team with their permission. Interested mothers also were identified via snowball sampling [16]. Eligibility screening was conducted via telephone. Individuals were eligible if they were at least 18 years old, had an infant between 0–12 months of age that did not have a feeding disorder, and were able to speak English or Spanish. Participants were then scheduled for telephone interviews within a month of the screening date. The anticipated sample size was 10 to 20 participants based on prior qualitative studies with mothers of infants [17,18]. Recruitment ended when data saturation was determined through an empirical evaluation of the depth of code exploration and understanding [19].

Contact information was obtained from 19 mothers who expressed interest in participating, but 6 did not respond to follow-up. A total of 13 mothers, 7 recruited from WIC outreach and 6 recruited from snowball sampling, were interviewed.