Regression parameters and confidence intervals for Models 1–4 for all studies and by climate category (analysis was not conducted for Climate B because there was only one location in this category).

<p>Significant parameters (p<0.05) are indicated with an asterisk (*).</p>†<p>Synchronous model.</p>‡<p>Model with exposure lagged by one month.</p>§<p>Synchronous model adjusted for distance from the equator.</p>¶<p>Model with exposure lagged by one month and adjusted for distance from the equator.