In the past, the only way to administer questionnaires was to have them printed and filled in with a pen on paper.

However, with development of IT technologies over the past decades, the way questionnaires can be used has changed considerably. This means that nowadays patient-reported outcomes (PRO) measures can be collected electronically, as the so-called ePRO measures – on computers, tablets or smartphones.

Moreover, the data can be sent over the Internet from any location, so the times when patients complete the questionnaire are not limited to their hospital visits.

The EORTC questionnaires are being used as ePRO in numerous commercial and academic studies.

In order to help users migrate our questionnaires in a consistent way, the EORTC Quality of Life Group has developed a guidance document.