Table 2 GRADE Criteria for Quality of Evidence
From: Global report on preterm birth and stillbirth (3 of 7): evidence for effectiveness of interventions
Quality of Evidence | Study Design | Interpretation |
|---|---|---|
High | Randomized Controlled Trials (RCTs) | Further research is very unlikely to change our confidence in the estimate of effect. |
Moderate | Low-Quality Randomized Trials or High-Quality Observational Studies | Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. |
Low | Observational Studies | Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. |
Very Low | Any Other Evidence | Any estimate of effect is very uncertain. |