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Spearman rank correlation of percentage of time spent frozen (%TF) during unsupervised daily-living monitoring and other estimates of freezing of gait (FOG). Similar results were obtained when we adjusted for disease duration or disease severity (ie, Hoehn and Yahr stages). *P ≤ .05. CFOG-Q = Characterizing Freezing of Gait Questionnaire; NFOG-Q = New Freezing of Gait Questionnaire; OFF = off-medication state; ON = on-medication state; TUG = Timed “Up & Go” Test.
