Table 2.

In paired comparison of the areas under the curve (AUC) of depressed brain volumes according to the image scan timing.

Group comparison	AUC difference	95% CI	p-value
Preoperation scan vs. 24 h scan	0.038	−0.070–0.146	p = 0.486
Preoperation scan vs. 7 day scan	0.120	0.035–0.205	p = 0.006
24 h scan vs. 7 day scan	0.081	−0.015–0.178	p = 0.098

CI, confidence interval.