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Summary & Timescale of the Data

The data collection period was from 1 January 2015 to 31 December 2017.

7064 procedures were recorded from 211 consultants at 123 centres in the United Kingdom, including 264 private patients from 54 consultants. Ten of the consultants returning data are not BAUS members.

Hospital Episode Statistics (HES) for 2015 to 2017 indicate that there were 5,024 PCNL cases in England. We do not believe that HES data accurately record the total number of procedures undertaken, as we are aware there are differences in the way this procedure is coded by different units. However, we do think we have received a very good response from the surgeons undertaking this procedure, and we estimate that we have collected data on about 90% of the procedures undertaken in England during this time period.  

  • Median number of cases per consultant: 25 (range 1 - 169)
  • Median number of cases per centre:  39 (range 1 - 298)

All data were entered by hand; there was no bulk uploading of data from other systems.

Cumulative analysis of 2015 to 2017 PCNL data

Timeline for 2015 to 2017 data

23 Feb 2018 Deadline for submission of data to BAUS
8 Mar 2018 Summaries of data returned to Consultant contributors for validation
20 Apr 2018 Final deadline for corrections and additional data
24 Apr 2018 Data extracted from the web-based database. Once extracted, the data was transferred to a Microsoft Access™ database for validation before being imported into Tableau™ for generation of the analyses
3 May 2018 All contributing surgeons sent a link to the website so they could check exactly how their data would be presented