. Author manuscript; available in PMC: 2012 Mar 21.

Published in final edited form as: J Child Neurol. 2011 Sep 27;27(3):325–331. doi: 10.1177/0883073811419260

Table 1.

Means, Standard Deviations (SD) and Linear Regression of Magnetic Resonance Imaging Measured Brainstem and Thalamus Volumes of Healthy Male (n=62) and Female (n=60) Children and Adolescents.

MRI Structural Volumes (cm3)	Males Means ±SD	Females Means ±SD	Group (Male>female)	Age	Group × Age
Brainstem (range)	24.55±3.2 (16.6 – 31.9)	22.59±3.2 (13.6 – 29.8)	F_{1, 118}= 10.0^A P=. 002	F_{1, 118}= 25.0^A P<. 0001	F_{1, 118}= .05^A P=. 82
Brainstem/white matter Ratio (range)	0.051±0.008 (0.036 – 0.067)	0.056±0.009 (0.037 – 0.084)	F_{1, 118}= 8.5^A P=. 004	F_{1, 118}= .83^A P=. 36	F_{1, 118}= 1.2^A P=. 28
Thalamus (range)	7.59±1.83 (3.54 – 12.32)	7.64±1.88 (3.32 – 11.27)	F_{1, 118}= .01^A P=. 91	F_{1, 118}= 7.2^A P=. 008	F_{1, 118}= 1.4^A P=. 24
Right Thalamus (range)	3.82±0.91 (1.87 – 6.06)	3.99±1.0 (1.65 – 6.0)	F_{1, 118}= .56^A P=. 46	F_{1, 118}= 8.1^A P=. 005	F_{1, 118}= 1.7^A P=. 2
Left Thalamus (range)	3.77±0.96 (1.67 – 6.59)	3.64±. 96 (1.56 – 5.75)	F_{1, 118}= .91^A P=. 34	F_{1, 118}= 5.4^A P=. 02	F_{1, 118}= .93^A P=. 34
Thalamus/grey matter Ratio (range)	0.009±0.002 (0.005 – 0.013)	0.01±0.002 (0.005 – 0.017)	F_{1, 118}= 8.4^A P=. 004	F_{1, 118}= 4.8^A P=. 03	F_{1, 118}= .01^A P=. 92

F value for linear regression model adjusting for gender, age and gender by age interaction.