Table 4.

Results of covariance analysis for comparison defecation between groups on different days by adjusting for variable effect of infant weight at admission

		Sum of squares	Degrees of freedom	Average squares	F	p-value
First day	Between groups	0.041	2	0.021	0.09	0.914
	Weight of admission time	0.339	1	0.339	1.49	0.226
Second day	Between groups	20.96	2	10.48	35.20	<0.001
	Weight of admission time	0.22	1	0.22	0.746	0.390
Third day	Between groups	8.65	2	4.33	16.72	<0.001
	Weight of admission time	0.16	1	0.16	0.61	0.439
	Second day defecation	4.97	1	4.97	19.23	<0.001