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Table 1 Description of the Utah autism spectrum disorder (ASD) families.

From: Genome-wide linkage using the Social Responsiveness Scale in Utah autism pedigrees

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  
  1. SRS, Social Responsiveness Scale.