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Table 1 Likelihood ratio test for model selection

From: In silico evolutionary analysis of Helicobacter pylori outer membrane phospholipase A (OMPLA)

Model

lnL

LRT

χ2 distribution

M1

−12515.96

47.04

>9 with 2 d.o.f. P < 0.01

M2

−12492.44

  

M7

−12521.64

83.94

>9 with 2 d.o.f. P < 0.01

M8

−12479.67

  
  1. Nested models with and without positive selection (M1 vs. M2 and M7 vs. M8) were compared in PAML. The χ2 distribution column shows the minimum likelihood ratio (=2ΔlnL) necessary for the more complex of two models to be significantly better (p < 0.01).