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Table 1 Criteria of high, moderate and low study quality

From: Cardiac implications of hypoglycaemia in patients with diabetes – a systematic review

Study quality


High: small risk of bias

Prospective study design and the following:

- Adequately described patients constituting a representative and clinically relevant sample

- Sample size ≥ 5000

Moderate: moderate risk of bias

Prospective study design

Low: high risk of selection and/or verification bias

Retrospective study design

Selected or enriched samples