Figure 4.

(A) Plot of mean post-void residual volume versus week of XRT treatment, stratified by treatment group and pre-treatment (baseline) post-void residual volume. The number of patients in each baseline category varies over time based upon treatment length. (B) Plot of mean difference from baseline in post-void residual volume versus week of XRT treatment, stratified by treatment group and pre-treatment (baseline) post-void residual volume. The number of patients in each baseline category varies over time based upon treatment length.