Intervention
The CPBM system used was the ForeSite Patient Turn System (ForeSite PT System), developed by XSENSOR Technologies Inc.The interface pressure data stored in the monitor were downloaded daily and generated data files in a compressed proprietary binary format. The files were backed up initially on 1 secured server for the first 100 participants, then 2 separate secured servers thereafter. The XSENSOR Pressure Exposure Analyzer Tool was used to export CSV (comma-separated value) formats of the files into an Excel spreadsheet with interface pressure data reduced to 1 frame per minute, which was modified from the original protocol of hourly intervals. The reduction of the data to a frame per minute from a frame per second was supported by correlation coefficient analysis. This modification maintained the fidelity of the data while making it more manageable to analyze.