Quality of life and post-concussion symptoms in adults after mild traumatic brain injury:: a population-based study in western Sweden

Objectives - To study quality of life and subjective post-concussion symptoms in adults (16-60 years) with a mild traumatic brain injury (MTBI) 3 months and 1 year after injury. Methods - Of a total of 489 patients 173 responded to questionnaires at 3 months and at 1 year, including the SF-36 health-related quality of life survey, which is a standardized measure validated for Swedish conditions. Post-concussion symptoms were rated as either existing or non-existing in a 21-item checklist [a modified version of Comprehensive Psychopathological Rating Scale (CPRS)]. Results - SF-36 showed impaired scores in all dimensions. Existing post-concussion symptoms were reported by 15-45%. Significantly, more symptoms were present at 3 months than at 3 weeks after injury. Furthermore, a significant correlation between higher rates of post-concussion symptoms and lower SF-36 scores was found. Conclusions- The SF-36 results were significantly impaired compared with an age- and gender-matched normative control group and the rate of post-concussion symptoms was significantly higher at 3 months than at 3 weeks after injury. As a significant correlation between higher rates of symptoms and lowSF-36 scores was also found we assume SF-36 to be a sensitive enough measure of MTBI-related effects.