Correlates of persistent sleep complaints after traumatic brain injury

The objective of the study was to examine factors associated with persistent sleep complaint (SC) after traumatic brain injury. The study design consisted of a retrospective chart review case series, with longitudinal follow-up data. Subjects were identified from Georgia Model Brain Injury System with sleep data post-injury. Twenty three (47.9%) had no sleep complaint at either 6 or 12 months post-injury or resolved sleep complaint at 12 months (Without Persistent SC group); 25 (52.1%) maintained a sleep complaint from 6 to 12 months or reported a sleep complaint at 12 months post-injury (With Persistent SC group). Demographic, premorbid and peri-injury characteristics and The Neurobehavioral Functioning Inventory (NFI) scores did not differentiate the two groups. The Without Persistent SC group had a slight improvement from 6 to 12 months post-injury in post-traumatic stress (PTS) symptoms and depression. Significant psychological patterns were identified in those with persistent SC at both 6 and 12 months post-injury, i.e., worse depression and worse PTS symptoms. This trend was apparent at 6 months and became significant at 12 months post-injury. However, subjects with newly emerging sleep complaints at 12 months had similar characteristics as the Without Persistent SC group. The observed psychological patterns associated with persistent sleep complaint in a specific time course after brain injury have important research and clinical implications that merit further study.