ICD-9 indicates International Classification of Diseases, Ninth Revision; OCD, obsessive-compulsive disorder; PHQ-8, 8-item Patient Health Questionnaire depression scale; PTSD, posttraumatic stress disorder; VITAL, Vitamin D and Omega-3 Trial; VITAL-DEP, Vitamin D and Omega-3 Trial-Depression Endpoint Prevention.
aThe flow diagram for the VITAL trial has been published.16
bIndividuals could have met more than 1 exclusion criteria.