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. 2010 Dec 12;365(1559):3807–3819. doi: 10.1098/rstb.2010.0009

Table 3.

Predictors of RI when horizontal transmission is allowed.

term estimate t-statistic p-value
intercept 0.20 89.7 <0.0001
RIno_horizontal 0.47 95.5 <0.0001
pdonation −0.24 −12.8 <0.0001

Results from a general linear model: RIhorizontal = intercept + β1(RIno_horizontal) + β2(pdonation). R2 for the full model is 0.79. Results are based on the RI calculated using the ‘true’ tree.