Pediatric TBI in Finland: an examination of hospital discharges (1998-2012)

Abstract Background Traumatic brain injury constitutes a persistent health problem among pediatric populations worldwide and is often referred to as a silent epidemic. There remains a paucity of scientific exploration with regard to understanding the ecological risk profiles of well-defined populations. In Finland, the healthcare system covers all hospitals, provides uniform access to care and has a universal surveillance system that allows for epidemiological examination of a wide variety of health issues. The present study aims to clarify the incidence, type and geographical presentation of pediatric TBI in Finland. Methods We utilized the National Hospital Discharge Register (NHDR) to prospectively identify all new cases of TBI among persons aged 18 years or younger between 1998 and 2012. Incidence rates were computed as average annual rates per 100,000 person years (py). Results During the study period 1998-2012, 21,457 children and adolescents were hospitalized for TBI. The cumulative incidence rate for the entire period was 99/100,000. Males were approximatively 1.5 times more likely to have sustained a TBI and had consistently higher rates during each year under study. Concussions were the most common form of TBI (92.9/100,000 person years), with diffuse brain injuries being the second most common (8.7/100,000 py). Diagnostic trends differed markedly with southern Finland experiencing the lowest rates of TBI when adjusted for population size. Conclusions TBI are serious and potentially disabling conditions. The elevated levels of pediatric TBI in Finland warrant increased attention.