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Table 1 Recommended configurations for autonomous FOG identification from accelerometry with corresponding performance metrics

From: Autonomous identification of freezing of gait in Parkinson's disease from lower-body segmental accelerometry

System # Sensors Threshold Window ICC number of FOG ICC percent time frozen Sensitivity Specificity
'reference' 7 3 7.5 s 0.75 0.80 84.3 78.4
shank (L or R) 1 3 7.5 s 0.75 0.73 86.2 66.7
back (lumbar) 1 3 10 s 0.63 0.49 86.8 82.4