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. 2010 Sep 30;6(9):e1001123. doi: 10.1371/journal.ppat.1001123

Table 2. Regressions between life-history traits with and without correction for phylogenetic signal.

Traits and dataset Test Slope (SE) Y-intercept (SE) ln(likelihood) AIC
log(spVL) vs. dsCD4 (MSM strict) OLS −1.7e-3Inline graphic(8.1e-4) 4.26Inline graphic(0.08) −56 119
RegBM −2.7e-3Inline graphic(6.8e-4) 4.1Inline graphic(0.34) −57 121
Trait variation among risk groups (all liberal) OLS log(spVL)Inline graphic and dsCD4Inline graphic
RegBM log(spVL)Inline graphic and dsCD4Inline graphic

The first line is a regression between log(spVL) and dsCD4. The second line tests if values for a given trait vary across risk groups. OLS is the ordinary generalised least square without phylogenetic correction (a generalised linear model yielded similar results); RegBM indicates a correction based on the tree assuming Brownian motion. SE stands for ‘Standard Error’. For further details, see the Supplementary Methods. Significance code for the p-value of the test is ‘Inline graphic’ Inline graphic, ‘Inline graphic’ Inline graphic, ‘Inline graphic’ Inline graphic and ‘n.s.’ for non sognificant.