TABLE 2.

Group comparison for ChP volumes.

	Healthy controls	Individuals with psychosis	Test statistic (ANCOVA, corrected for age and sex)	Test statistic (ANCOVA, corrected for age, sex, and normalized LV volume)
Data set #1: Early course psychosis
Normalized ChP volume left hemisphere in mm3 (mean ± SD)	.00092 ± .00019	.0012 ± .00020	F (1, 67) = 22.23, p < .00010*, η2 = .25	F (1, 66) = 26.57, p < .00010*, η2 = .29
Normalized ChP volume right hemisphere in mm3 (mean ± SD)	.00087 ± .00016	.0011 ± .00019	F (1, 67) = 20.30, p < .00010*, η2 = .23	F (1, 66) = 21.03, p < .00010*, η2 = .24
Data set #2: Chronic psychosis
Normalized ChP volume left hemisphere in mm3 (mean ± SD)	.00069 ± .00043	.00089 ± .00040	F (1, 60) = 3.45, p = .068, η2 = .054	F (1, 59) = .30, p = .58, η2 = .0050
Normalized ChP volume right hemisphere in mm3 (mean ± SD)	.00068 ± .00038	.00081 ± .00042	F (1, 60) = 1.72, p = .20, η2 = .028	F (1, 59) = .005, p = .94, η2 < .00010

Abbreviations: ChP = choroid plexus; SD, standard deviation.

^* p < .025 (after Bonferroni correction for two tests).