TABLE 5.

AMOVA for 130 Ascaris worms assigned to seven populations in three groups^a

Source of variation	Degrees of freedom	Sum of squares	Variance component	% of variation	P valueb
Among groups	2	383.43	5.49	21.91	0.008
Among populations within groups	4	111.44	0.62	2.48	<0.001
Within populations	123	2,328.75	18.93	75.62	<0.001

^aThe hierarchy was based on cluster analysis as described in the text. The three populations of worms from pigs and the population of Danish human Ascaris worms were assigned to one group worms from humans in Bangladesh and Nepal were included in a second group, and worms from humans in Guatemala were included in a third group.

^bProbability of having a more extreme variance component (1,023 permutations).