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Table 5 Median and interquartile ranges of ASD-related behaviours and percentage meeting criteria for ASD from the SCQ for participant groups: PTHS, AS and CdLS

From: Behavioural and psychological characteristics in Pitt-Hopkins syndrome: a comparison with Angelman and Cornelia de Lange syndromes

  PTHS AS CdLS Kruskal-Wallis tests/chi-squared test Post hoc comparison: Mann-Whitney U test/chi-squared test
h/χ2 df p value Comparison U/χ2 df Z p value Effect size r/relative risk (95% CI)
SCQ—total N 22 22 18          
Median 24 18 25 18.41 2 < .001 PTHS > AS 73.50 1 3.965 < .001 0.59 (large)
IQR 3.75 7 7.57
SCQ—communication N 22 22 18        
Median 8 6 6.93 25.70 2 < .001 PTHS > AS 55.00 1 4.555 < .001 0.69 (large)
IQR 0.25 3 1.25
SCQ—restricted, repetitive and stereotyped behaviours N 22 22 22        
Median 4 4 5 3.56 2 .169 N/A
IQR 3 2.25 2.63
SCQ—reciprocal social interaction N 22 22 18        
Median 10.5 7 12 11.15 2 .004 PTHS > AS 132.00 1 2.598 .009 .39 (medium)
IQR 4.25 5.25 5.25
Met ASD cut-off N 22 22 18          
N (%) 21 (95.5) 15 (68.2) 16 (88.9) 5.85 2 .049a PTHS > AS 5.50 1 .023 1.40 (1.04 to 1.89)b
  1. aFishers exact p value reported as 50% had an expected count < 5
  2. bRelative risk of meeting criteria for ASD in AS relative to PTHS