. Author manuscript; available in PMC: 2015 Aug 22.

Published in final edited form as: Am J Med Genet A. 2015 Apr 21;167(7):1436–1450. doi: 10.1002/ajmg.a.37071

TABLE VI.

Descriptive Statistics for Scales of Independent Behavior-Revised

Measure	N	Mean	Median	SD	Range
Adaptive Behavior^a
Broad Independence SS	63	63.22	62.0	18.34	30 – 107
Motor Skills SS	63	68.63	72.0	18.87	30 – 115
Social Interaction and Communication Skills SS	63	72.62	72.0	19.21	30 – 110
Personal Living Skills SS	63	67.24	72.0	20.21	30 – 109
Community Living Skills SS	63	65.44	70.0	19.46	30 – 98
Maladaptive Behavior^b
General Maladaptive Index	63	−20.98	−19.0	12.72	−54 – −2
Internalized Maladaptive Index	63	−19.70	−20.0	12.15	−46 – 4
Asocial Maladaptive Index	63	−14.27	−14.0	10.84	−39 – 8
Externalized Maladaptive Index	63	−10.84	−6.0	14.53	−50 – 10

For the general population, mean = 100, SD = 15. Lowest possible SS set at 30 to match lowest possible DAS-II GCA. (The SIB-R allows SSs of 0.)

For the general population, mean = 0. SD = 10 for clinical groups.