Regional WMH volume differences between COMT genotypic groups.

Abbreviation: WMH: white matter hyperintensities.The P values obtained by ANCOVA using age, sex, years of education, and total intracranial volume as covariates.Data are expressed as mean (SE).#A trend toward greater WMH volumes than the Val/Val group, uncorrected P缩写：WMH即脑白质高信号（white matter hyperintensities）。以年龄、性别、受教育年限及颅内总体积为协变量，经协方差分析（Analysis of Covariance，ANCOVA）所得的P值。数据以均值（标准误，standard error，SE）表示。#相较于Val/Val组，WMH体积呈现升高趋势，未校正P值。