Figure 2
From: Low expression of a few genes indicates good prognosis in estrogen receptor positive breast cancer
Density distribution of ESR1 compared to ER status. Mixture models applied to the ESR1 gene accurately model the clinically assessed ER status. The dotted line indicates the cutoff between high and low components as found by fitting the density distribution with a pair of gaussian distributions. The accuracy of the approximation of ER status by the high and low components is 0.88 (95% CI 0.85 – 0.92), as determined by Monte Carlo cross-validation.