Table 3. Summary of the tests of the different effects using a deviance analysis using Type III decomposition.

Effects	df	Deviance	F value	Pr(F)	Significance
16S	1	118.33	7.0777	0.008	**
Pop	2	117.11	2.2385	0.109
Ref	2	115.68	0.7310	0.482
16SxPop	2	118.33	3.5353	0.031	*
16SxRef	2	115.60	0.6406	0.528
PopxRef	4	122.25	3.8508	0.005	**

*P<0.05,

**P<0.01.

16S (SSU rDNA) and all subsequent terms implying this variable are regressors. Pop (Chernobyl population) and Ref (North Irish reference sequence) are qualitative effects.