Resolution: standard / high
Figure 4.
Schoenfeld residual plot for βRaceW. Schoenfeld residual plot for βRaceW. The black solid line is 
RaceW, a smooth function fit to the residuals; βRaceW is constant in time which is indicated by the horizontal dotted line (which is known in this case because the data have been simulated).
RaceW, a smooth function fit to the residuals; βRaceW is constant in time which is indicated by the horizontal dotted line (which is known in this case because the data have been simulated).Ahmed et al. Molecular Cancer 2007 6:15 doi:10.1186/1476-4598-6-15
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