NR 505 Week 3 Assignment 1, Research Summary Table (Injuries of Children with Non-Helmet Use) The research question addressed in the research summary table is: “How effective is helmet use in reducing child related injuries?” Three of the samples were retrospective studies and one was an epidemiological study. All of the studies included children under 14 years old, one study included ages up to 16 years old and the last study included ages up to 18 years old. One of the studies in the...