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Table 2 Task performance, interrater reliability, and clinical correlations. Task parameter sensitivity is defined by the corresponding z-score cutoff range

From: A robot-based behavioural task to quantify impairments in rapid motor decisions and actions after stroke

    Subjects with stroke (% impaired) Interrater reliability
Parameters (normative models) z-score cutoff BIT > =130 BIT < 130 Intraclass correlation (P)
LA RA
  Global performance
Target hits <−1.645 78 68 96 0.93 (2×10−11)
Distractor hits >1.645 6 23 21 0.80 (2×10−6)
Object hits <−1.645 64 51 86 0.89 (2×10−9)
Distractor proportion >1.645 39 51 79 0.90 (2×10−9)
Object processing rate <−1.645 42 51 69 0.83 (2×10−7)
  Spatial and temporal performance
Miss bias >|1.96| 25 0 21 0.54 (0.004)
Hand transition >|1.96| 32 33 57 0.24 (0.11)
Median error <−1.645 51 53 82 0.55 (0.002)
  Hand specific performance
Hand bias (hits) >|1.96| 67 69 75 0.89 (5×10−9)
Hand selection overlap <−1.645 21 23 32 0.61 (8×10−4)
Total hand bias area >|1.96| 50 53 71 0.80 (5×10−7)
Hand bias speed >|1.96| 63 64 86 0.93 (5×10−11)
object hits left <−1.645 85 14 89 0.90 (2×10−10)
right <−1.645 29 74 54 0.78 (4×10−6)
Distractor proportion left >1.645 59 39 96 0.93 (7×10−11)
right >1.645 26 67 61 0.84 (1×10−7)
Total hand area left <−1.645 60 14 68 0.91 (3×10−10)
right <−1.645 25 40 32 0.81 (3×10−7)
hand speed left <−1.645 68 14 86 0.89 (4×10−9)
right <−1.645 21 54 50 0.84 (2×10−7)
Parameters impaired 95 % (>5) 79 79 96 0.96 (1×10−14)
  1. Abbreviations: BIT (behavioural inattention test), LA (left-affected subject), RA (right-affected subject)
  2. Interrater reliability is shown by the intraclass correlation and corresponding p-values