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Table 2 Feasibility of KiTAP subtests in FXS cohort and MA for ceiling and basal effectsa

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

Subtest Performed testb Failed retest, n Performed test/retest, % MA, years (IQ, points)c
  n %    Some fail All fail Some ceiling Most ceiling
Alertness 36 100 0 100 NA NA > 6.3 (45) > 7.8 (52)
Distractibility 35 97 2 92 < 4.7 (52) NA > 7.1 (47) NA
Go-NoGo 35 97 0 97 < 3.6 (45) NA > 7.0 (47) NA
Flexibilityd 33 92 0 92   NA > 8.4 (60) NA
Vigilance 22 61 0 61 < 7.5 (50) < 5.4 (36) > 7.13 (47) > 8.1 (54)
Visual Scanning 20 56 1 53 < 7.5 (50) < 5.4 (36) NA NA
Sustained Attention 8 22 0 22 < 8.2 (55) < 7.1 (47) NA NA
Divided Attention 5 14 0 14 < 8.2 (55) < 7.1 (47) > 8.4 (60) NA
  1. aAbbreviations: FXS, Fragile X syndrome; IQ, intelligence quotient; KiTAP, Test of Attentional Performance for Children; MA, mental age; NA, not applicable
  2. bOut of 36 participants.
  3. cIQs are also given for reference but as the subjects vary in age, these are less refective of the ability level required to do the task than the MA.
  4. dThe mental age at which some subjects fail could not be derived for flexibility as IQ measures were not available for the three subjects who failed; however, subjects with MA of 3.6, 4.7 and 5.4 years were successful in completing this task both times.