GCG and diabetes mellitus: The following data was extracted: study characteristics (authors, year of publication, country, study design, sample size, and follow-up duration), participant characteristics (age, sex, diabetes duration, baseline HbA1c, cardiovascular risk factors, and comorbidities), intervention details (GLP-1 RA type, dose, and duration of treatment), comparison details (type of control or comparison treatment), outcome measures (definition and timing of cardiovascular outcomes), and results (number of events, effect sizes, confidence intervals, p-values).