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eCOA study: Paper back-up and data reliability

22 October 2018

eCOA study: the impact of a paper back-up system on data reliability

In any eCOA study, a data back-up solution is needed in case of any issues that may arise with the electronic equipment, such as a tablet, used to collect data.

Although the use of back-up systems is seldom necessary, their availability is crucial for when something goes wrong. And it’s important to choose the right back-up system because it may have a huge impact on data reliability, and therefore on your clinical trials.

Main drawbacks of a paper back-up system:

  • No control over the assessment date
  • Less prevention of data entry errors
  • Reduced conformity of data
  • Inconsistency of data with other study data
  • More expensive and difficult to set-up
  • Loss of the benefits of eCOA
  • Improper use



To download the contents of this study, please click here:



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