Table 3.

Echocardiographic measurements ($\overline{X}$ ± SD) (%).

Indices	Groups	Before	3 months		6 months
LVEF	Treatment	66.28 ± 3.02	66.26 ± 2.41	0.970	64.96 ± 2.69	0.094
	Placebo	66.76 ± 1.95	65.68 ± 2.34	0.045	65.48 ± 3.12	0.060
	P-value	0.596	0.392		0.531

The values in the fifth column mean differences between 3 months after the start of chemotherapy compared to before chemotherapy; the values in the seventh column mean differences between 6 months after the initiation of chemotherapy relative to values before chemotherapy.