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Table 2 Demographic and behavioural characteristics of the selected sample at T1 and T2

From: Persistence of self-injurious behaviour in autism spectrum disorder over 3 years: a prospective cohort study of risk markers

  

T1

T2

p valuea

N

 

67

67

 

Age

Median (IQR)

10.00 (7.00–14.00)

13.50 (10.00–17.00)

<0.001

Self help

% partly able/able

89.6

88.1

1.00

Mobility

% mobile

95.5

97.0

1.00

Speech

% verbal

95.5

91.0

0.50

Vision

% normal

97.0

86.6

0.39

Hearing

% normal

98.5

98.5

1.00

MIPQ total score

Median (IQR)

34.00 (30.00–38.00)

34.00 (29.00–40.00)

0.264

TAQ total score

Median (IQR)

44.00 (24.63–53.00)

41.00 (21.00–50.00)

0.083

RBQ total score

Median (IQR)

28.00 (17.00–37.00)

26.00 (18.00–33.00)

0.289

SCQ total score

Median (IQR)

28.00 (15.00–37.00)

21.36 (6.00–34.00)

<0.001

SCQ total self-injury

Median (IQR)

30.00 (18.00–37.00)

25.00 (11.00–34.00)

<0.001

SCQ total no self-injury

Median (IQR)

26.00 (15.00–35.00)

17.00 (6.00–30.00)

<0.001

  1. aSignificant differences between the two data collection points are highlighted in italics (p < 0.01; all tests are two tailed apart from age)