Table 4.

MMSE scores, and POCD incidence in Groups A, B, C, D, and E (n=68)

Group	T1	T2	T3	T4	POCD (n)	POCD incidence (%)
A	27.9±2.0	27.6±2.1 b c d	27.8±2.2 b c d	27.8±2.3	3 cde	4.4 cde
B	27.8±1.9	27.7±2.1 b c d	27.5±2.0 b c d	27.9±2.0	3 cde	4.4 cde
C	27.9±2.1	25.3±2.0 a	25.2±2.1 a	27.9±1.9	9 b	13.2b
D	27.8±2.0	25.5±2.2 a	25.4±2.0 a	27.7±2.2	8 b	11.8 b
E	27.9±2.0	24.4±2.3 a	24.4±2.2 a	27.8±2.1	17	25

T1: one day preoperatively; T2: postoperative day one, T3: postoperative day three; T4: postoperative day seven

^ap < 0.05 vs. T1;

^bp <0.05vs. Group E;

^cp <0.05vs. Group C;

^dp <0.05vs. Group D;

^ep <0.01vs. Group E