Supplement 1. SAS code for general linear model analysis.

<h2>File List</h2><div> <p><a href="glm.sas">glm.sas</a> (MD5: c946a1840dd18caadcf2dfc663ab664e) </p> </div><h2>Description</h2><div> <p>The file glm.sas contains SAS code for testing the significance of differences in the linear relationship of season-long LdNPV mortality to log10 egg mass density collected before and after 1989 (the point at which <i>E. maimaiga</i> appeared in North American gypsy moth populations).</p> </div>