Premature infants are at high risk of suboptimal health and development. This randomized clinical trial evaluated the impact of a developmentally based intervention, H-HOPE (Hospital-home transition: optimizing prematures' environment), for infants born between 29-34 weeks gestational age (GA) with at least two social-environmental risk factors. H-HOPE will improve infant behavior, mother care for the infants, mother-infant interaction and will reduce health care costs.