Table 4.

Preoperative HDS, MMSE, and S&E scores of groups I and D

		Group I	Group D	P value
HDS		10.0 ± 7.7	12.5 ± 7.8	0.14
MMSE		28.8 ± 1.9	26.5 ± 3.3	<0.001*
S&E scale	on	86.7 ± 12.2	77.9 ± 13.6	0.005*
	off	59.4 ± 19.8	39.4 ± 21.1	<0.001*

^*Statistically significant. HDS: Hamilton depression scale, MMSE: mini-mental state examination, S&E: Schwab & England.