Figure 2.

Predicted probability of undergoing observation for localized prostate cancer by risk group, age group, CCI group, and year of diagnosis^†.

^†Predicted probabilities are computed with other variables in the model set to the following values: race = white, marital status = married, region = Western region, and median income of census tract = $38,898–$56,002.

Abbreviations: CCI, Charlson Comorbidity Index