Objective-Assess the association between caregiver supervision and acute unintentional injury in young children; evaluate whether lower levels of supervision result in more severe injury.Methods-A case-crossover study was conducted. Parents of children ≤ age 4 whose injuries required Emergency Department (ED sample) treatment or admission to the hospital (inpatient sample) were interviewed. Information on supervision (3 dimensions: proximity, attention, continuity) at the time of injury and 1 hour before the injury (control time) was collected. An overall supervision score was created; a higher score indicates closer supervision. Hospital admission served as a proxy for injury severity. Odds ratios (OR) and 95% confidence intervals (95% CI) were calculated.Results-Interviews were completed by 222 participants; 50 (23%) were in the inpatient sample. For each supervision dimension the inpatient sample had higher odds of injury, indicating effect modification requiring separate analyses for inpatient and ED samples. For both samples, proximity "beyond reach" was associated with the highest odds of injury; compared to 1 hour before injury, children were more likely to be beyond reach of their caregiver at the time of injury (inpatient sample: OR 11.5, 95% CI 2.7-48.8; ED sample: OR 2.9, 95% CI 1.8-4.9). Children with lower supervision scores had the greatest odds of injury (Inpatient sample: OR 8.0, 95% CI 2.4-26.6; ED sample: OR 3.3, 95% CI 1.9-5.6). Author Contributions: Patricia G. Schnitzer: Dr. Schnitzer conceptualized and designed the study; directed data collection, management and analysis; drafted the initial manuscript, and approved the final manuscript as submitted. M. Denise Dowd: Dr. Dowd contributed to conceptualization and study design; coordinated and supervised data collection at one study site, contributed to interpretation of study findings, critically reviewed and revised the manuscript, and approved the final manuscript as submitted. Robin L. Kruse: Dr. Kruse contributed to design of the data collection instruments, conducted data analyses, critically reviewed and revised the manuscript, and approved the final manuscript as submitted. Barbara A. Morrongiello: Dr. Morrongiello designed several of the data collection instruments; contributed to conceptualization of the study and interpretation of the data, critically reviewed and revised the manuscript, and approved the final manuscript as submitted.Disclaimer: The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
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Author ManuscriptConclusions-Lower levels of adult supervision are associated with higher odds of more severe injury in young children. Proximity is the most important supervision dimension for reducing injury risk.