Silver Cloud datasets only contained SilverCloud ID numbers and so anonymised already.  The data in the excel spreadsheets were in long format and using R,  converted to wide format so one row per participant.  All Qualtrics surveys were joined using email addresses and then merged with the Silver Cloud data using the Silver Cloud id numbers.  All personally identifiable information was taken out. Finally, the data collected from Trust sites were merged into one data set for all 17 sites, PID was removed, and the service site data was joined in R using the SilverCloud ID as the joining variable.