Table 1 Classification of evidence for studies of clinical outcomes of telemedicine interventions.
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 |