Figure 1.

Data from the tamoxifen prevention trial. See text for a description of groups. Horizontal lines are estimates and 95% confidence intervals for model for constant absolute risk difference per 1000 (RD) or relative risk (RR). P-values correspond to likelihood ratio tests comparing the models with varying and constant risk difference or relative risks.

Baker et al. BMC Medical Research Methodology 2004 4:24   doi:10.1186/1471-2288-4-24
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