Article type
Definition
Basic science
Controlled experiment; independent variable affects a dependent variable in a laboratory setting
Basic science review
Review of basic science experiments
Clinical investigation
Controlled experiment; independent variable affects a dependent variable in a clinical setting
Clinical review
Review of clinical experiments or trials
Population/observational study
Draws inferences about a particular characteristic where the assignment of a treated and control group is outside the control of the investigator
Table 2.2
EBM level (1–5) and grade (A–C) classification of references
Level | Adjustment | Description |
|---|---|---|
1 | A | Homogenous prospective, randomized controlled trials (RCT) or basic science (BS) with controls
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