A skin scar is an important component of satisfaction with surgical treatment. Both the patient's comfort level and the possible treatment tactics depend on the variant of scarring changes.   It was necessary to developed of a new instrument for assessing a skin scar in a child.  It should take into account the requirements of clinometric. A total of 170 children participated in the study at various stages of the development and validation of the scale. The study period is from 2021 to 2024. The procedures of exploratory factor analysis and multiple regression analysis were carried out, taking into account all the standard criteria necessary for this. The Subjective pediatric assessment scar scale (SPASS) perception consists of three sheets with questions.  Each of them is intended for personal filling by the child, his parent and, finally, the doctor.  The questionnaire sheets for children are divided depending on the age periodization. The average level of inter–expert reliability among doctors was 0.96 (0.93 - 0.99; 95% CI). Intra–expert reliability had a variation from 0.85 (0.88 – 0.82; 95% CI) to 0.97 (0.95 - 0.99; 95% CI). The overall convergent validity value for the questionnaire was 0.95. 

Dmitrii Savelev -  pediatric surgeon, children's surgical department of the hospital Saratov clinic named after SR Mirotvortsev, assistant at the Department of Pediatric Surgery at the SSMU named after VI Razumovsky, awarded the VM Derzhavin Prize at the 10th International Forum of Pediatric Surgeons (Moscow, 2024). Research interests: emergency surgery, quality life of children, assessment of skin postoperative scars.