Table 1 PICOS criteria for inclusion of studies.

From: Dietary calcium intake in relation to type-2 diabetes and hyperglycemia in adults: A systematic review and dose–response meta-analysis of epidemiologic studies

Parameter

Criteria

Participants

Adult population (≥ 18 years)

Intervention/Exposure

Different categories of dietary calcium intake

Control/Comparison

Individuals in the lowest category of dietary calcium intake

Outcome

Abnormal glucose homeostasis including, type-2 diabetes, prediabetes and hyperglycemia

Study design

Observational studies including prospective cohort, cross-sectional and case–control studies

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