. Author manuscript; available in PMC: 2013 Mar 1.

Published in final edited form as: Am J Med Genet B Neuropsychiatr Genet. 2012 Mar;159B(2):243–253. doi: 10.1002/ajmg.b.32022

Table 1.

Demographic Data

	PWS		Control	p value

Mean (SD)	DEL	UPD	HWC	DEL vs HWC	UPD vs HWC	UPD vs DEL
N	15	8	25
Age (years)	25.2 (13.6)	17.4 (6.5)	22.3 (10.8)	0.465	0.233	0.143
Sex (female: male)	12:3	3:5	14:11	0.123	0.362	0.042
Body mass index	33.0 (8.6)	29.8 (10.2)	20.7 (2.8)	<.001	<.001	0.425
IQ	60.1 (8.2)	69.8 (13.1)	118.4 (11.1)^°	<.001	<.001	0.042

Global Brain Volumes, mean volume, ×10³ mm³ (SD)

GMV	646 (29)	695 (67)	719 (63)	<.001	0.36	0.025
WMV	458 (26)	461 (41)	511 (46)	<.001	0.012	0.832
CSF	286 (32)	287 (39)	298 (26)	0.193	0.362	0.947
TICV
(GM + WM + CSF)	1391 (73)	1444 (142)	1529 (126)	<.001	0.115	0.249

^°

IQ was only collected on 10 out of 25 HWC individuals