Waiting times for male bladder outflow tract surgery
The data extraction process is summarised in Supporting Information 1, Supplementary Figure 3 . Data were available for 23,798 patients. The mean age of patients was 73.1 years (SD 8.538) before GIRFT visits and 72.9 years (SD 8.533) after. Procedures were conducted across 125 trusts during the baseline pre-visit period. In the pre-visit period, in the 115 trusts seeing 50 patients or more during the study period, the mean waiting time before the GIRFT visits varied from 72.2 days to 184.9 days across trusts.
The change in waiting times for TURP across the study period is summarised in Figure 4 . The ITSA is presented in Table 1 . At the start of the study period the average waiting time was 126.3 days. During the pre-GIRFT visit period this proportion rose significantly by an average of 0.310 days per 30 day period (3.7 days per annum), After the GIRFT visit there was no significant trend to either increasing or decreasing waiting times, suggesting some levelling off in waiting times, although the change in trend was not significant (decrease in the upward trend of 0.050 days waiting time per 30 day period; 0.6 days per annum).