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Development and validation of a pediatric nutritional screening score (PNSS) for hospitalized children

本文正式版本已出版,請見:10.6133/apjcn.032017.17

摘要


Background and Objectives: Undernutrition is common in hospitalized children. However, there is no evidence on the most effective nutritional screening tool. The objective of this study was to develop and validate a pediatric nutritional screening tool with a simple and quick scoring system to assess undernutrition risk upon hospital admission. Methods and Study Design: The study had a two-phase prospective observational design. A novel pediatric nutritional screening score (PNSS) was developed. The optimal cut-off value of PNSS was determined by receiver operating characteristic curves used to classify patients according to whether they were 'at-risk of undernutrition' or 'not at-risk', based on PNSS and body composition data. In the evaluation phase, PNSS sensitivity, specificity, and reliability were evaluated by comparing the data with a complete dietetic assessment. Additionally, other nutritional screening tools (PYMS, STAMP, and STRONG_(kids)) were used in the comparisons. Length of hospital stay, weight loss, disease complications, and nutritional support during hospitalization were recorded. Results: PNSS consisted of three elements: disease with malnutrition risks, changes in food intake, and anthropometric measurements, with a score of 0-2 for each element. The optimal cut-off score to identify patients (n=96) at risk of undernutrition was 2. The percentage of children with undernutrition risk was 44.9%. Children with oncologic, gastrointestinal, and cardiac diseases were most likely to be at risk of undernutrition. The agreement between PNSS and the complete dietetic assessment was moderate (κ=0.435, 95% CI=0.373-0.498). Sensitivity and specificity values of PNSS were 82% (95% CI=76%-87%) and 71% (95% CI=67%-74%), respectively. Inter-rater agreement had a κ value of 0.596 (95% CI=0.529-0.664, p<0.001). Compared with the dietetic assessment, PYMS had high specificity (95.4%) and low sensitivity (49.0%) and STRONGkids had high sensitivity (83.2%) and low specificity (60.2%). STAMP and PYMS had moderate agreement with the dietetic assessment (κ=0.479, 0.506), and STRONGkids had a fair agreement (κ=0.304). The at-risk group was associated with significantly longer length of hospital stay and higher percentage of weight loss compared with the not-at-risk group. Conclusion: PNSS is the first pediatric nutritional screening tool developed for hospitalized children and validated in a large population of patients in China. PNSS is a simple and reliable tool for the detection of undernutrition risk upon hospital admission.

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