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Background Growth charts are an important method for evaluating a child's health, growth, and nutritional status. Objective To establish Lambda-Mu- Sigma (LMS) and Z score references for assessment of growth and nutritional status in Egyptian school children and adolescents. Methods A total of 34,822 Egyptian school children and adolescents from 5 to 19 years were enrolled in a cross sectional randomized study from December 2017 to November 2019 to create LMS and Z score references for weight, height and body mass index (BMI) corresponding to ages. They wer