Table 1

Description of the Utah autism spectrum disorder (ASD) families.

Type of family

No. of families

Average No. of generations; standard deviation (SD; range)

Total subjects

Average No. of subjects per family; SD (range)

Total ASD subjects

Average No. of ASD subjects per family; SD (range)

Total No. of subjects with SRS

Average No. of subjects per family with SRS (range)


Large (6-9 generations)

19

7.89; 0.66 (6 to 9)

328

17.26; 12.92 (5 to 50)

81

5.22; 2.54 (2 to 9)

254

13.37; 10.32 (4 to 40)


Moderate (4 generations)

6

4; 0.00 (4)

85

14.17; 11.34 (6 to 32)

21

4.00; 3.39 (2 to 9)

70

11.67; 10.21 (3 to 27)


Small (2-3 generations)

39

2.28; 0.46

(2 to 3)

216

5.54; 2.40

(2 to 11)

79

2.05; 0.57 (1 to 3)

194

4.97; 2.11

(2 to 11)


Full sample

64

629

181

518


SRS, Social Responsiveness Scale.

Coon et al. Molecular Autism 2010 1:8   doi:10.1186/2040-2392-1-8

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