From: Clinical outcomes resulting from telemedicine interventions: a systematic review
Study Class | Characteristic |
---|---|
I | • Properly designed random controlled trials |
II | • Random controlled trials that contain design flaws preventing |
 | • specification of Class I |
 | • Properly designed trials with control groups not randomized |
 | • Multi-center or population-based longitudinal (cohort) study |
 | • Case control studies |
III | • Descriptive studies (uncontrolled case series) |
 | • Clinical experience |
 | • Expert opinion |
 | • Case reports |