2.3 Nested summary of yard

2.3.1 By cow:

Of the 5 yards, each that had at least one instance of a cow having milk with high protein content and a cow having milk with low protein content. Cows in some yards may have a lower mean time in weeks since calving, but there is no evidence to suggest that is a difference among yards.

rm_covsum_nested(data = Milk, id = c("Cow"), covs = c("protein", "Time"), maincov = "Yard")

	Full Sample (n=79)	1 (n=19)	2 (n=11)	3 (n=17)	4 (n=11)	5 (n=21)	Unnested p-value	Unnested Effect Size	Unnested StatTest	Nested p-value
protein							0.54	0.031	Kruskal Wallis, Eta sq	0.96
Mean (sd)	3.4 (0.2)	3.4 (0.2)	3.4 (0.2)	3.5 (0.2)	3.4 (0.1)	3.4 (0.2)
Median (Min,Max)	3.4 (2.9, 3.9)	3.5 (3.0, 3.9)	3.4 (3.0, 3.7)	3.5 (3.0, 3.8)	3.4 (3.2, 3.6)	3.3 (2.9, 3.7)
Time							0.53	0.027	Kruskal Wallis, Eta sq	0.97
Mean (sd)	9.0 (1.1)	8.8 (1.2)	9.1 (1.2)	9.2 (1.1)	9.3 (1.0)	8.9 (1.1)
Median (Min,Max)	10.0 (7.1, 10.4)	8.5 (7.5, 10.4)	10.0 (7.1, 10.0)	10.0 (7.5, 10.1)	10.0 (8.0, 10.2)	9.5 (7.5, 10.0)