营养不良
医学
观察研究
浪费的
聚类分析
人口
多项式logistic回归
逻辑回归
机器学习
星团(航天器)
人工智能
数据挖掘
内科学
环境卫生
计算机科学
程序设计语言
作者
Liangyu Yin,Chunhua Song,Jiuwei Cui,Xin Lin,Na Li,Fan Yang,Ling Zhang,Jie Liu,Feifei Chong,Chang Wang,Tingting Liang,Xiangliang Liu,Li Deng,Wei Li,Mei Yang,Jiami Yu,Xiaojie Wang,Xing Liu,Shoumei Yang,Zheng Zuo
标识
DOI:10.1016/j.clnu.2021.06.028
摘要
Background and aims Most nutritional assessment tools are based on pre-defined questionnaires or consensus guidelines. However, it has been postulated that population data can be used directly to develop a solution for assessing malnutrition. This study established a machine learning (ML)-based, individualized decision system to identify and grade malnutrition using large-scale data from cancer patients. Methods This was an observational, nationwide, multicenter cohort study that included 14134 cancer patients from five institutions in four different geographic regions of China. Multi-stage K-means clustering was performed to isolate and grade malnutrition based on 17 core nutritional features. The effectiveness of the identified clusters for reflecting clinical characteristics, nutritional status and patient outcomes was comprehensively evaluated. The study population was randomly split for model derivation and validation. Multiple ML algorithms were developed, validated and compared to screen for optimal models to implement the cluster prediction. Results A well-nourished cluster (n = 8193, 58.0%) and a malnourished cluster with three phenotype-specific severity levels (mild = 2195, 15.5%; moderate = 2491, 17.6%; severe = 1255, 8.9%) were identified. The clusters showed moderate agreement with the Patient-Generated Subjective Global Assessment and the Global Leadership Initiative on Malnutrition criteria. The severity of malnutrition was negatively associated with the nutritional status, physical status, quality of life, and short-term outcomes, and was monotonically correlated with reduced overall survival. A multinomial logistic regression was found to be the optimal ML algorithm, and models built based on this algorithm showed almost perfect performance to predict the clusters in the validation data. Conclusions This study developed a fusion decision system that can be used to facilitate the identification and severity grading of malnutrition in patients with cancer. Moreover, the study workflow is flexible, and might provide a generalizable solution for the artificial intelligence-based assessment of malnutrition in a wider variety of scenarios.
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