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Table 1 Effects of life-history variables on mtDNA substitution rate in bird species without (A) and with phylogenetic control (B).

From: The erratic mitochondrial clock: variations of mutation rate, not population size, affect mtDNA diversity across birds and mammals

Model slope R2 p1 p2
(A) Without Phylogenetic control     
Body mass -0.25 0.39 <0.01  
Maximum longevity -0.66 0.25 <0.01  
Body mass + Maximum longevity   0.39 <0.01 0.42
(B) With Phylogenetic control     
Body mass -0.22 0.38 <0.01  
Maximum longevity -0.46 0.19 <0.01  
Body mass + Maximum longevity   0.38 <0.01 0.89