Table 4. Node-based analyses for explaining genetic diversity.

Results of fitting a linear model for explaining empirical corrected haplotype diversity and nucleotide diversity with modeled in-degree, out-degree and betweenness centrality as explanatory variables at three PLDs. For each variable we show the coefficient estimated in the model, its associated P value, the Incidence Risk Ratio (IRR) coefficient and the 95% lower (L) and upper (U) confidence intervals. For each model tested, we show the multiple R² value and the associated P value. P values below 0.05 are shown in bold.

	Corrected haplotype diversity (h†)					Nucleotide diversity (π)
	Coefficient	P-value	IRR	L	U	Coefficient	P-value	IRR	L	U
PLD 14
In-degree	0.0048314	0.408	1.004843	0.9984597	1.011267	6.12E–05	0.1775	1.0000612	1.0000055	1.0001169
Out-degree	−0.0033951	0.458	0.9966107	0.9894915	1.003781	−8.61E–05	0.0318	0.9999139	0.99986	0.9999678
Betweenness	0.0002055	0.84	1.0002055	0.9988981	1.001515	9.74E–06	0.2229	1.0000097	0.9999954	1.0000241
Multiple R2	0.1445	0.7614				0.5147	0.1459
PLD 21
In-degree	0.0007668	0.871	1.0007671	0.9970901	1.0044577	4.51E–05	0.214	1.0000451	1.0000094	1.0000809
Out-degree	−0.0012069	0.616	0.9987938	0.994191	1.003418	−4.53E–05	0.0305	0.9999547	0.9999308	0.9999787
Betweenness	−0.0013393	0.23	0.9986616	0.9982158	0.9991075	−1.26E–05	0.1319	0.9999874	0.9999784	0.9999964
Multiple R2	0.2277	0.5875				0.5816	0.09045
PLD 28
In-degree	−0.002588	0.631	0.9974157	0.9895889	1.005305	5.04E–05	0.275508	1.0000504	0.9999974	1.0001033
Out-degree	−0.000758	0.71	0.9992423	0.9955642	1.002934	−3.23E–05	0.085887	0.9999677	0.9999465	0.9999889
Betweenness	−0.001097	0.726	0.998904	0.9947085	1.003117	−4.08E–05	0.144042	0.9999592	0.9999285	0.9999899
Multiple R2	0.23	0.5829				0.4607	0.2037

Notes.

^*Indicate statistical significance after correcting for multiple tests (critical P = 0.0029).