marginally significantp = 0.053
51.2 years, p = 0.007), while sex distribution was marginally significant ( p = 0.053), necessitating correction for these primary demographic variables; [ 2 ] including additional demographic variables would create sparse cell problems and generate unstable weight estimates with inflated confidence intervals; and [ 3 ] sensitivity analyses confirmed robustness, alternative weighting strategies (sex-only, age-only, combined, and exclusion of extreme BMI values) altered BMI prevalence by less than 0.2% points.