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Table 1 Inclusion and exclusion criteria for study screening and selection

From: Equity in prenatal healthcare services globally: an umbrella review

PICOS

Inclusion Criteria

Exclusion Criteria

Population

- Must contain a prenatal human patient population at any stage during pregnancy from conception (0 days gestation) up to delivery

- May include gender identities other than women

- Non-human prenatal patients (i.e., animal models, cell models)

- Focused only on postnatal or non-pregnant human patients

Intervention

- Any healthcare service or practice where the patient interacts with the healthcare system, that includes an outcome in relation to the target population health or healthcare experience

- Healthcare service or practice related only to contraceptives, abortion, ectopic pregnancies, and fertility

- Healthcare service or practice that does not include outcomes related to target population (i.e., if it focuses on healthcare professionals only, or focused on a procedure/method and not the patient outcome)

- Focus on policy or guidelines rather than healthcare service or practice interaction

Comparison

- An alternate intervention within prenatal healthcare, or a control for no intervention, or an internal comparison of outcomes

- None

Outcome

- Pregnancy outcomes or experience of prenatal care based on explaining how care was influenced by equity/inequity

- No prenatal population outcomes or experience

- Prenatal population outcomes or experience which only stated a factual/statistical relation/association to equity/inequity

Study Design

- Studies identified as systematic reviews or meta-analyses if they included a systematic search strategy with two or more databases, a clear inclusion criterion, and a focus on primary research studies

- Published in English language

- Studies must mention “equity”, “inequity”, “equitable”, or “inequitable” in their title, abstract, introduction, methods, results, discussion, or conclusion.

- Published in any region or country

- Studies which are not systematic reviews

- Any other review type (i.e., umbrella, scoping, narrative, integrative, critical, literature review)

- Any primary studies

- If “equity”, “inequity”, “equitable”, or “inequitable” is not mentioned in the body of the article