A multicenter examination and strategic revisions of the Yale Global Tic Severity Scale
McGuire JF, Piacentini J, Storch EA, Murphy TK, Ricketts EJ, Woods DW, Walkup JW, Peterson AL, Wilhelm S, Lewin AB, McCracken JT, Leckman JF, Scahill L. A multicenter examination and strategic revisions of the Yale Global Tic Severity Scale. Neurology 2018, 90: e1711-e1719. PMID: 29653992, PMCID: PMC5952973, DOI: 10.1212/wnl.0000000000005474.Peer-Reviewed Original ResearchConceptsTic symptom severityTic scoreTIC numbersYale Global Tic Severity Scale (YGTSS) scoresSymptom severityYale Global Tic Severity ScaleYGTSS total tic scoreTotal tic scoreSimilar clinical characteristicsInternal consistencySeverity Scale scoreCross-sectional studyTic Severity ScaleDelphi consensus processClinical characteristicsPhonic ticsTic disordersMulticenter examinationImpairment scoresGood internal consistencySeverity ScaleScale scoreSymptom ChecklistDiagnostic InterviewStrong internal consistency