Abstract
Understanding the impact of concussion history on mental health—mood disorders and substance use—is an essential step in characterizing the psychological and behavioral consequences of concussion and in developing effective treatments. The objective of this study was to examine the association between the history of concussion and substance abuse by investigating both its direct and indirect association via mood disorder. A secondary objective was to determine whether gender moderates the association. A comprehensive survey was administered to 4849 college-age adults that assessed history of concussion; depression, anxiety, and panic disorders using the Patient Health Questionnaire (PHQ); and substance use using the Alcohol Use Disorders Identification Test
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