Parameter estimates, dN/dS, values of log-Likelihood (l), positive selection sites, and Likelihood Ratio Tests (LRT) in the G-gene analysis of RSV-A viruses circulating in Ontario, Canada between November 2010 and February 2011.

See Methods for explanation of terms used in parameter estimates column.Neutral models (M1a, and M7) were compared with their respective alternative (selection) models (M2a and M8), which allow ω>1. Model comparison can be calculated using 2Δl = 2 (l1−l0)), where l1 = LRT of alternative model; and l0 = LRT of null model. Proportion of positively selected sites and their corresponding ω-values in M2a and M8 models are in bold. The significant P values indicated that all analyses find very strong evidence for the selection model.aPositively selected sites using Bayes Empirical Bayes analysis [28]. Posterior probability of positively selected sites of M2a model: 50% to 74% (213, 218, 237, 285); 85% to 94% (233, 274); and >95% (232, 250, 251, 253, 265, 266, 273). Posterior probability of positively selected sites of M8 model: 50% to 74% (213, 218, 234, 249, 260, 277, 286); 75% to 84% (237, 285); 85% to 94% (233); and >95% (232, 250, 251, 253, 265, 266, 273, 274, 290).