The Children's International Mucositis Evaluation Scale Is Valid and Reliable for the Assessment of Mucositis Among Brazilian Children With Cancer

The Children's International Mucositis Evaluation Scale (ChIMES) is considered a valid and reliable instrument for the assessment of mucositis in pediatric patients aged 0–18 years. To perform the translation and cultural adaptation of ChIMES to Brazilian Portuguese and assess its psychometric properties. Methods for translation and cultural adaptation were used. Other measurements obtained concomitantly for the assessment of psychometric properties included the Oral Mucositis Daily Questionnaire, a visual analog scale, the World Health Organization grading scale for mucositis, and the National Cancer Institute Common Terminology Criteria for Adverse Events toxicity scale. For test-retest analysis, patients and guardians responded to the self-report and proxy versions of ChIMES within intervals of one to seven days. Regarding internal consistency, Cronbach's alpha (α) values were 0.769 (95% CI = 0.631–0.868) and 0.879 (95% CI = 0.872–0.920) for the self-reported and proxy versions, respectively. The convergent validity criteria were met for the self-reported and proxy versions (Spearman's rho = 0.466–0.751; P