@article{ref1,
title="Day-to-day variability of post-concussion-like symptoms reported over time by a non-concussed cohort",
journal="Brain injury",
year="2016",
author="Balasundaram, Arun Prasad and Athens, Josie and Schneiders, Anthony G. and McCrory, Paul and Sullivan, S. John",
volume="30",
number="13-14",
pages="1599-1604",
abstract="PRIMARY OBJECTIVE: To explore the change (trend) in post-concussion-like symptoms reported over time. RESEARCH DESIGN: Longitudinal study. <br><br>METHODS AND PROCEDURES: University students aged 18-30 years self-reported their symptoms experienced on a daily basis. Each participant was contacted via a text message each day during one of three pre-defined time zones to complete the Sport Concussion Assessment Tool 2 (SCAT2) post-concussion symptom scale on 7 consecutive days. MAIN OUTCOMES AND RESULTS: One hundred and ten (26 males and 84 females) students completed the study on all 7 days. Only two meaningful clusters emerged and comprised of a total of 105 participants. The primary cluster included 85 participants who showed a relatively stable pattern in their symptoms reported over time. Meanwhile, a second cluster comprised of 20 participants who demonstrated a decreasing trend in the reported symptom scores. <br><br>CONCLUSIONS: The data indicated that non-concussed participants exhibited considerable individual variability in the symptom scores reported over time. However, some participants showed a systematic decreasing trend in their symptom scores reported over the 7 days. Caution must be exercised in interpreting the serial symptom scores that are obtained following a concussion, given that this study was conducted in a non-concussed cohort.<p /> <p>Language: en</p>",
language="en",
issn="0269-9052",
doi="10.1080/02699052.2016.1199902",
url="http://dx.doi.org/10.1080/02699052.2016.1199902"
}