| Ia | Evidence obtained from meta-analysis or systematic review of randomized controlled trials. |
| Ib |
Evidence obtained from at least one randomized controlled trial. |
| IIa | Evidence obtained from at least one well-designed controlled study without randomization. |
| IIb |
Evidence obtained from at least one other type of well-designed quasi-experimental study without randomization. |
| III | Evidence obtained from well-designed non-experimental descriptive studies, such as comparative studies, correlation studies and case studies. |
| IV |
Evidence obtained from expert committee reports or opinions and/or clinical experiences of respected authorities |
Chronic Disease
Stroke Assessment Across the Continuum of Care
Practice Recommendations