Prevalence of Orthostatic Proteinuria in Healthy Children

Investigators from Turkey conducted a cross-sectional study to assess the prevalence of orthostatic proteinuria (OP) in school-aged children. Investigators used a population-based, stratified, cluster-sampling method to identify a representative sample of children 6–15 years old who attended an elementary or junior high school in Antalya, Turkey. Children with a chronic disease requiring medication were excluded. Demographics and anthropometric measurements were obtained from participating children at baseline.

Investigators collected random urine samples from child participants at their school. Participants who had ≥1+ proteinuria on their first urine sample provided 2 additional random urine samples at least 2 weeks apart. Those whose proteinuria had resolved by the third sample were diagnosed …