Table 3. ANOVA for egg recovery rates from Ascaris spp., Trichuris spp. and N. americanus 100 seeded eggs using 1.20, 1.25, 1.30 and 1.35-SpGr NaNO₃.

Parasite	Source of variation	Sum of squares	Degrees of freedom	Mean sum of squares	F (DFn, DFd)	P value	R2
Ascaris
	Between SpGrs	289.4	3	96.47	F (3, 8) = 22.92	0.003*	0.90
	Within SpGrs	33.67	8	4.208
	Total	323.1	11
Trichuris
	Between SpGrs	10397	3	3466	F (3, 8) = 843	<0.001***	0.99
	Within SpGrs	33	8	4.1
	Total	10430	11
N. americanus
	Between SpGrs	427.2	3	142.4	F (3, 8) = 50.63	<0.001***	0.95
	Within SpGrs	22.50	8	2.813
	Total	449.7	11

*P<0.05

**P<0.002

***P<0.001