TABLE 3.

POD incidence at different time points in the two groups [n (%)].

Group	T4	T6	T7	Total incidence
P	4 (10%)	0 (0%)	0 (0%)	4 (10%) a
C	7 (17.5%)	3 (7.5%)	1 (2.5%)	11 (27.5%)

^a p < 0.05, Compared with group C.