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  5. 應用機器學習之慢性硬腦膜下出血存活預測
 
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應用機器學習之慢性硬腦膜下出血存活預測

Other Title
Using machine learning models to predict survival of patients with chronic subdural hematoma
Type
thesis
Date Issued
2022-06-28
Author(s)
陳怡蓉
Advisor
許明暉
Subjects
系所名稱:醫學院人工智慧醫療碩士在職專班
Publisher
醫學院人工智慧醫療碩士在職專班
Description
口試委員:徐之昇 HSU, CHIH-SHENG;顏如娟 YEN, JU-CHUAN;許明暉 HSU, MIN-HUEI
開放校內, 開放日期為2022-07-11;校外, 開放日期為2023-07-11
Abstract
背景:慢性硬腦膜下血腫疾病於65歲以上高齡患者有50%-80%病患有頭部外傷的病史,標準治療方式是進行血腫清除手術,手術成功率高但有0%-32%死亡率。過去文獻多以回歸分析方法提出此疾病的相關風險因子,但少見有應用機器學習做此疾病術後的存活預測模組。
目的:
(1) 、探討術後死亡原因
(2) 、建立存活預測模型
(3) 、比較不同模型的預測結果
(4) 、了解住院診斷關聯群(Taiwan’s Diagnosis-Related Groups, TW-DRGs)是否具備存活預測價值
方法:使用北醫三院資料庫醫療資料共766位成人,80%資料作訓練集,20%資料作測試集,使用SAS軟體進行統計資料分析、使用Python進行特徵選擇、建立機器學習預測模型(預測院內存活、預測六個月存活、預測一年存活)、並以SHAP value解釋各特徵對預測結果的貢獻。
結果:研究發現患有合併症和共病症的死亡病患其死因以惡性腫瘤、心臟疾病、腦血管疾病居前三名,慢性病占全部死因87%;另外,術前住院時間長,營養狀況不佳與高血糖病患也是術後死亡率高的危險因子。在模型預測結果中,預測院內存活結果最好的是Logistic Regression模型,其AUC 0.8893、Accuracy 0.69、Sensitivity 1、Specificity 0.78;預測六個月存活結果最好的是SVM演算法,其AUC 0.8197、Accuracy 0.86、Sensitivity 0.79、Specificity 0.83;預測一年存活結果最好的是KNeighborsClassifier演算法,其AUC 0.7962、Accuracy 0.8、Sensitivity 0.85、Specificity 0.75;在所有特徵中,三種特徵篩選方式於三種預測模型中均篩選出的特徵依序為:BUN、住院診斷關聯群、Glucose、PT、住院日數,顯示住院診斷關聯群(Taiwan’s Diagnosis-Related Groups, TW-DRGs) 除原本單純的批價申報碼以外,在python機器學習演算法中,對模型預測具有其相當重要性。
URI
https://handle.ncl.edu.tw/11296/2r3z26
https://203.71.86.71/handle/123456789/10659

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