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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.