Odds ratios of being conceived within a temporal cluster.^c.

<p>CI: 95% Confidence Intervals.</p>c<p>Odds ratios are relative to all conceptions within the time period window <b><i>W</i></b> in which the cluster is found. For example, odds ratios for children conceived in the 1994 cluster are relative to those conceived in the window <b><i>W</i></b> 1992/3/1 to 1995/3/1. Significant results are in bold.