OBJECTIVE: To assess burden and life satisfaction in family members of patients with severe traumatic brain injury (sTBI) at 1 and 2 years post-injury, examine if change in burden can be predicted by family member and patient demographics, patient's functional status, family members social network or level of burden at 1 year. METHODS: Prospective national multicenter study. Self-report from family members, patient data collected from a national cohort study on patients with sTBI. 80 family members participated. MAIN OUTCOME MEASURE: The Caregiver Burden Scale (CBS), life satisfaction.