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Table 3 Reproducibility of KiTAP measures with analysis of range and distribution of scores in FXS cohorta

From: Feasibility, reliability, and clinical validity of the Test of Attentional Performance for Children (KiTAP) in Fragile X syndrome (FXS)

KiTAP Measure Ceiling effects, n Range and distribution Revised ICCb
Alertness (n = 29) Correct 17 Too many with ceiling  
  Omissions 19   
  Anticipations 9   
  RT   Good 0.87
  SD RT   Good 0.89
Distractibility (n = 26) Correct 4   
  Omissions 1 Fair 0.56
  Errors 4 Good 0.62
  RT   Skewed 0.89 (0.95 without outlier)
Go-Nogo (n = 28) Correct 7   
  Errors 6 Good 0.88
  Omissions 7 Good 0.57
  RT   Good 0.88
  SD RT    
Flexibility (n = 27) Correct 0   
  Errors 1 Good 0.73
  RT   Fair 0.78
  SD RT    
Vigilance (n = 18) Correct 6 (trial 1);10 (trial 2) Too much ceiling, strong learning effect  
  Omissions 6 (trial 1); 10 (trial 2)   
  Errors 5 (trial 1); 13 (trial 2)   
  RT   Good but had outliers 0.71 without outlier
Visual Scanning (n = 16) Correct 0 Too few could do test to get distribution  
  Omissions 0   
  RT    
  SD RT    
Sustained Attention (n = 8) Correct 0 Too few could do test to get distribution  
  Omissions 0   
  Errors 0   
Divided Attention (n = 5) Correct 0 Too few could do test to get distribution  
  Omissions 1   
  Errors 1   
  RT    
  1. aAbbreviations: FXS, Fragile X syndrome; KiTAP, Test of Attentional Performance for Children; RT, reaction time; SD, standard deviation
  2. Performed using SPSS software.