Data

Data retention

1. Every study can have an associated expiry date.
2. This date is set by the user (can be as distant in the future as the situation requires it).
3. One year after the study expires, data is removed to the language-specific part of the database for the specific PROM (consolidating it with other previously provided data, thus making it even more pseudonymous than it already was as part of a specific study).
4. At any given point before data is removed from the Study section of the database a responder can ask to have all previous responses removed from our databases, as stated in the user’s Terms of Use.

Extracting response data

Long form implies that the dataset has one row per alternative for each choice scenario that the decision makers face. Thus, with N decision makers choosing amongst J alternatives across S scenarios, the dataset will have N xj x S rows. The dependent variable is coded.