Distribution of bias factors yielded by 10,000 iterations of the bias analysis for alachlor. The cumulative distribution of the bias factor for the dose-response slope depicts the strength of association, separate from the precision of the slope. All results from the bias analysis yielded dose-response trends less strong than the original result. Approximately 2.5% of the dose-response trends yielded by the bias analysis equaled 0 (no trend) or below (reversed trend). Approximately 70% of the dose-response trends were less than 10% of the size of the original trend.