Data supporting the systematic review and dose–response meta-analysis of age at menarche and gestational diabetes mellitu

This repository consists of a single Excel workbook organized into three worksheets. Each worksheet contains the dataset used for a specific analysis performed in the systematic review and meta-analysis of age at menarche and gestational diabetes mellitus: Worksheet 1 (Early_menarche): Data used for the conventional meta-analysis of early versus reference age at menarche. Worksheet 2 (Late_menarche): Data used for the conventional meta-analysis of late versus reference age at menarche. Worksheet 3 (Dose_response): Category-specific exposure and outcome data used for the dose–response meta-analysis. No individual participant data are included. All data were extracted from published studies included in the systematic review.