Background Prospective data collection is recommended for epidemiological studies and weekly (or every two weeks, or monthly) self-reported online questionnaires for athletes are frequently used.

One of the most commonly-used measurement tools in psychology research and practice is what’s called the patient-reported, or self-reported, test. This method involves giving a patient, client, or ...

Efforts to address these data challenges are underway, as governments and national statistical offices, working with international partners, are increasingly expanding their national surveys to ...