2.1. Recruitment
Pregnant participants were recruited from a single prenatal care clinic serving a rural population in the northwest region of Michigan’s Lower Peninsula. Inclusion criteria were maternal age of at least 18 years, pregnant with a gestational age of approximately 22 weeks at enrollment, and no self-reported contraindication to increasing dietary fiber. Inclusion criteria were broad in an attempt to enroll a sample generally representative of the area, but we did restrict enrollment to those women living within a three-county region because of the food delivery component. All participants met in-person with a research assistant to complete the informed consent process and receive oral and written directions about the next steps of the study. The PEAPOD study was approved by the Institutional Review Boards at Michigan State University (#16-1515) and Munson Medical Center (#1026493). 