To the Editor We read with great attention and interest the thoughtful article published recently in JAMA Pediatrics by Bennett et al.1 To study intracranial pressure (ICP) monitoring in pediatric severe traumatic brain injury, they analyzed 2 large databases, the National Trauma Databank and Pediatric Health Information System database. The authors used an ingenuous method of probabilistic linkage and covariate adjustment. They found no statistically significant association of ICP monitoring with functional survival of children in the propensity-weighted analysis.