Principles and practices of returning individual research results to participants in large studies of pregnancy and childhood.

Investigators conducting human subject research have typically conveyed only clinically actionable results back to individual participants. Shifting scientific culture around viewing participants as partners in research, however, is prompting investigators to consider returning as much data or results as the participant would like, even if they are not clearly actionable. Expanding return of individual results may add value for individual participants and their communities, refine future research questions and methods, build trust, and enhance retention of participants. Yet, gaps remain in understanding the implications of these changes for groups of "vulnerable" participants, including pregnant and pediatric participants. Here we present the findings of a National Institutes of Health workshop on returning individual research results, particularly as applicable to pregnant and pediatric participants. Research participants who were panelists at the workshop agreed that they desired to receive their results. Workshop findings and current literature indicate that participants have differing preferences for what results they receive. One way to address the limits of current practice is to develop flexible digital platforms that convey individual results along with researchers' availability to answer questions, and to provide as much information as possible about actionable steps for controlling environmental exposures associated with disease risk.