Uses of process evaluation in the Maryland WIC 5-a-Day Promotion Program

Using a crossover design, the authors conducted a 6-month intervention prog ram aimed at increasing fruit and vegetable consumption among women served by the Women, Infants, and Children program in Baltimore City and six Maryl and counties. The theoretical framework for the interventions was the Trans theoretical Model of Change. At 2 months postintervention, mean daily consu mption had increased significantly more in intervention participants than i n control participants. Extensive process evaluation data were collected to assess the quantity and quality of program services delivered. These inclu ded participant nutrition session evaluation forms and attendance logs, foc us groups of attenders and nonattenders of sessions, information about peer educators, and postintervention surveys. Many lessons were learned about p rogram delivery, factors affecting attendance, and the obstacles to dietary change. Strategies to increase participants' consumption of fruits and veg etables were modified based on these lessons and the process evaluations.