Szukana fraza: [Abstract = "The article aims to determine the size of Rohrer`s index in relation to age and environ\-mental and social factors. The study was conducted in selected schools of the Lubuskie Voivodeship between 2015 and 2017. The age of the researched was between 7 and 18. Together, 11680 persons \(6080 girls and 5600 boys\) were involved. Among somatic features, height and body mass were measured with the Martin technique as described by Ćwirko\-Godycki and Drozdowski. Rohrer`s index was calculated on the basis of these features. The information on social variables was gathered by means of a questionnaire. The questions concerned age, living environment, and parents` education.`"]

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