To evaluate scoring systems for chest radiographs, we determined interobserver agreement and relation to the lung function during the 1st week of life in ventilated preterm infants. Three independent observers examined chest radiographs by applying radiological scores according to Lischka, Yuksel, Greenough, Toce, and Giedion on postnatal days 2 and 7. Kappa statistics was used to assess the interobserver agreement.
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