Review README and code

[jwe4ec]

Including...

• Revisit 1_get_raw_data.ipynb part of "Cleaning Scripts: Functionality" section and related entries in directory trees

In Part III of 4_clean_data.R:

• Revisit "Exclude participants from other studies: Remove MindTrails Movement participants"
• Review code for these tasks under "Add GIDI-UP 12-month follow-up data from Qualtrics":
  • "Remove duplicates"
  • "Compute final DASS-21 and OASIS scores"
    • Also review code for "we compute total DASS-21-AS and OASIS scores..." in "Adding GIDI-UP Qualtrics Data" section
• Revisit this task under "Handle multiple screenings" after seeing code:
  • "For duplicated values on DASS-21-AS items, "over18", and "time_on_page" and duplicated values on OASIS item “time_on_page” for a given "session_id" and "session_only", keep last row"
• Review code for "Add GIDI-UP 12-month follow-up data from Qualtrics"