Skip to main content

Table 9 Number and percentage of individuals with PTHS and matched AS and CdLS displaying challenging behaviour and chi-squared analysis

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

 

PTHS, N = 24

AS, N = 24

CdLS, N = 24

Chi-squared test

Post hoc comparison: chi-squared test

χ 2

df

p value

Comparison

χ 2

df

p value

Relative risk (95% CI)

Displayed SIB in the last month (%)

17 (70.8%)

10 (41.7%)

19 (79.2%)

8.07

2

.018

PTHS > AS

4.15

1

.042

1.70 (.99 to 2.91)a

Displayed destruction of property in the last month (%)

9 (37.5%)

13 (54.2%)

13 (54.2%)

1.78

2

.411

     

Displayed physical aggression in the last month (%)

13 (54.2%)

16 (66.7%)

6 (25%)

8.79

2

.012

PTHS > CdLS

4.27

1

.039

2.17 (.99 to 4.75)b

Displayed stereotyped behaviour in the last month (%)

18 (75%)

16 (66.7%)

21 (87.5%)

2.93

2

.232

     
  1. aRelative risk of self-injurious behaviour in AS relative to PTHS
  2. bRelative risk of physical aggression in CdLS relative to PTHS