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. Author manuscript; available in PMC: 2015 Sep 16.
Published in final edited form as: Bipolar Disord. 2011 May;13(3):287–293. doi: 10.1111/j.1399-5618.2011.00922.x

Table 1. Demographics.

PBD Mean (SD) Healthy controls Mean (SD) t p-value
Intelligence quotient 103.8 (16.0) 110.5 (17.8) 1.45 0.15
WRAT 104.7 (10.6) 110.1 (14.3) 1.57 0.12
YMRS 17.9 (10.2) 1.8 (2.8) -7.38 0.00
CDRS-R 48.9 (15.7) 19.6 (2.6) -8.33 0.00
Frequency Frequency χ2 p-value
Socioeconomic status Median 2 Median 2 3.65 0.30
Sex, female 20 14 0.02 0.90
Race, white 71% 43% 10.04 0.04

PBD = pediatric bipolar disorder; WRAT = Wide Range Achievement Test; YMRS = Young Mania Rating Scale; CDRS-R = Child Depression Rating Scale-Revised.