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. Author manuscript; available in PMC: 2020 Apr 14.
Published in final edited form as: J Autism Dev Disord. 2019 Apr;49(4):1717–1726. doi: 10.1007/s10803-018-3853-x

Table 3.

Descriptive Statistics of Child Behavior Checklist Raw Scores and Qualitative Categories

Scale Median % Clinical Range
(Interquartile Range)
% Borderline Range
(Scoring range) AS PWS WS LRC AS PWS WS LRC

Total problems
(0–200)
34.5
(27–54)
24
(16–31)
36.5
(26–48)
21
(13–34)
16.7
13.3
0.0
4.6
17.7
2.9
4.7
2.3
Broadband scales
 Internalizing problems
 (0–72)
10
(5–14)
4
(2–7)
7.5
(4–12)
4
(1–6)
10.0
16.7
0.0
0.0
14.7
0.0
2.3
2.3
 Externalizing problems
 (0–48)
12.5
(7–17)
7
(5–11)
13
(10–19)
9
(5–13)
10.0
0.0
0.0
0.0
8.8
8.8
2.3
4.7
Narrowband scales
 Emotionally reactive
 (0–18)
2
(1–4)
0
(0–1)
1
(0–3)
1
(0–3)
0.0
10.0
0.0
0.0
5.9
8.8
0.0
4.7
 Anxious/Depressed
 (0–16)
1
(0–4)
0
(0–1)
1
(0–3)
1
(0–2)
0.0
0.0
0.0
0.0
2.9
2.9
0.0
0.0
 Somatic complaints
 (0–22)
2
(1–4)
0.5
(0–2)
2.5
(1–5)
0
(0–2)
6.7
13.3
4.6
0.0
8.8
17.7
2.3
0.0
 Withdrawn
 (0–16)
4
(3–4)
2
(1–3)
2
(1–3)
0
(0–1)
13.3
10.0
9.1
9.1
8.8
2.9
2.3
0.0
 Sleep problems
 (0–14)
4.5
(2–6)
1
(0–2)
4.5
(3–6)
3
(2–4)
6.7
6.7
0.0
0.0
5.9
5.9
9.3
2.3
 Attention problems
 (0–10)
6
(3–8)
3
(1–4)
5
(3–7)
2
(0–3)
36.7
23.3
0.0
9.1
32.4
11.8
2.3
2.3
 Aggressive behavior
 (0–38)
6
(2–9)
4.5
(3–7)
8.5
(5–14)
7
(4–12)
0.0
3.3
0.0
0.0
5.9
0.0
0.0
0.0
DSM-oriented scales
 Depressive problems
 (0–20)
3
(2–6)
1
(0–2)
3.5
(2–5)
1
(0–3)
16.7
13.3
0.0
9.1
17.7
5.9
2.3
0.0
 Anxiety problems
 (0–20)
1
(0–4)
1
(0–2)
2.5
(1–4)
2
(1–3)
0.0
3.3
0.0
0.0
5.9
5.9
0.0
0.0
 Autism spectrum problems
 (0–24)
5
(4–7)
3
(2–5)
2.5
(2–4)
1
(0–2)
23.3
3.3
4.6
13.6
8.8
5.9
2.3
0.0
 Attention deficit/hyperactivity problems
 (0–12)
7.5
(5–9)
4
(2–5)
7
(5–9)
3
(2–5)
6.7
10.0
0.0
0.0
11.8
5.9
0.0
0.0
 Oppositional defiant problems
 (0–12)
1
(0–3)
2
(0–3)
2
(1–4)
3
(1–5)
0.0
0.0
0.0
0.0
5.9
2.9
0.0
0.0

Note. AS = Angelman syndrome; PWS = Prader-Willi syndrome; WS = Williams syndrome; LRC = Low-risk controls; % Clinical Range = Percentage of participants with T scores of 64 or more for total problems and broadband scales or T scores of 70 or more for narrowband and DSM-oriented scales; % Borderline Range = Percentage of participants with T scores of 60 through 63 for total problems and broadband scales or T scores of 65 through 69 for narrowband and DSM-oriented scales.