Table 3.

Comparison of MMSE between two the groups

Group	One day before surgery	One day after surgery	Three days after surgery	Seven days after surgery
Control group (n=57)	24.84±3.52	20.52±3.56	24.58±3.37	24.50±3.51
Observation group (n=43)	25.39±2.74	25.42±2.78	25.65±2.47	25.97±2.64
t	0.387	3.497	0.219	0.393
P	0.675	0.012	0.443	0.367