The Higgins I -squared statistic ( I 2 ) was employed to assess the degree of heterogeneity, with interpretations based on thresholds outlined in the Cochrane Handbook for Systematic Reviews of Interventions: 0–40%: may not be significant. 30–60%: could indicate moderate heterogeneity. 50–90%: may suggest substantial heterogeneity. 75–100%: indicates considerable heterogeneity.
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Isolated diastolic hypertension and cardiovascular outcomes across different diagnostic guidelines: a systematic review and meta-analysis.
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