TeleForm in The PREVENT Trial - PowerPoint PPT Presentation

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TeleForm in The PREVENT Trial

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  1. Participants were Taking Antidepressants Had had 3 or more previous episodes of depression Currently well They were randomised to either Take part in an MBCT class and consider coming off their antidepressants OR Continue taking their antidepressants TeleForm in The PREVENT Trial

  2. How much data? • Participants were followed-up over two years at 6 different times • There were 26 different CRFs, some interview administered other self-report questionnaires • In total 2,698 data points for each participant • In total 1,143,952 items of data

  3. TeleForm • Drastically reduce the time to enter data • Inbuilt data verification tools • No out of range scores allowed • Custom verifications – age of participant • Data required – trial id • Format dates correctly • Can handle many different sorts of data • Likert Scales • Thermometer Scales • Block capital text boxes • Free form text boxes • Screen shot from scanned image of CRF

  4. Stages of TeleForm • Design the form • Scan CRF • Verify data TeleForm was unsure of • Export Verified Data • Excel • SPSS • Access • SQL Database • Text File • ……

  5. Verification • The second most important aspect of TeleForm • Reads Data • 100% sure its read the data correctly – Sends data for export • Not 100% sure its read the data correctly – Asks user to verify

  6. TeleForm is not 100% sure ‘No’ is ticked • So the User is asked to confirm • User confirms with ‘Tab’ key.

  7. Why not sure? • With Tick Boxes • TeleForm measures the percentage of ink in a box • If less than 15% TeleForm will confidently report no tick • If more than 25% TeleForm will confidently report a tick • If between 16% and 24% TeleForm will ask user for verification • At design stage all of these variables can be changed to suit your CRF

  8. Item crossed out • Only one value allowed

  9. Block Capital Text Can choose values from a database to correspond • Always verify

  10. Free Form Text

  11. Export • Once all items are verified the user will be asked if data should be exported

  12. Form Design • Setting the form up well leads to fewer verifications and crucially fewer potential errors • TEST, TEST and TEST again • The following can influence success of form • Physical size of tick boxes • Paper printed on • Colours used • Export CRF as a whole or as individual questionnaire • Constraining allowed data • Checking that the form is user friendly • Once form is finalised you can’t change the key elements – Training is Crucial