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研究生:何品璇
研究生(外文):Pin-Syuan Ho
論文名稱:採用線上看診之決策樹分類—以台灣為例
論文名稱(外文):The Decision-Tree Based Classification of E-Visits: A Case Study in Taiwan
指導教授:陳靜枝陳靜枝引用關係
口試委員:魏志平盧信銘孔令傑
口試日期:2017-06-20
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:資訊管理學研究所
學門:電算機學門
學類:電算機一般學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:英文
論文頁數:80
中文關鍵詞:線上看診醫療數據探勘資料分類決策樹健保資料分析
外文關鍵詞:E-VisitHealthcare AnalyticsData ClassificationDecision TreeHealthcare Insurance Data Mining
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線上看診透過網路平台使病人可在線上取得醫療看診服務,相較於一般門診的看診方式,線上看診具有更高的效率以及便利性。尤其對於居住在偏鄉地區、行動不便、患有慢性疾病的病人來說,線上看診是更方便的醫療管道。目前已有許多歐美國家開放線上看診等相關醫療服務,而對於尚未開放線上看診的國家,應在開放線上看診或擬定相關政策前,對於開放線上看診所帶來的影響進行全面的預估以及規劃。
本研究提出一以決策樹為基礎的線上看診分類方法分類病人會使用線上看診的情況,我們藉由現有的線上看診研究所提供會使用線上看診的病人特徵,以及病人的看診記錄進行分類。透過決策樹模型得到一組線上看診的分類規則。
本研究以尚未開放線上看診的台灣為例,利用台灣健保資料庫中2012年的資料進行分析,透過線上看診的決策樹分類模型得到一組線上看診的分類規則,了解病人會使用線上看診的情況,並可預估可能使用線上看診的人數比例。
本研究提出的方法利用已開放線上看診國家的研究結果分類看診記錄,並提供一組清楚的線上看診分類規則,可提供尚未開放線上看診的國家進行開放前的評估與計劃。而開放線上看診後,亦可透過此方法更新分類規則,因應病人行為模式的改變,以確保醫療服務的穩定。此方法的概念不只可應用在線上看診的預估,亦可應用在其他新服務或新產品的推行規劃。
E-Visit is the consultation service delivering the health care online, which is more efficient and effective than in-office visit, especially for patients living in rural area, disabled, or with chronic diseases. Some countries have already implemented e-visits. For the countries have not yet implemented e-visits, the governments have to make a comprehensive preparation and predict the effect of implementing e-visits.
This study proposes a decision-tree based e-visit classification approach (DTEVCA) to determine clinic visits qualified as e-visits using the clinics’ medical records and patients’ demographic data. This study assumes that health care insurance (i.e., national health insurance) will subsidize the e-visit service cost, in which case it is essential to identify patients who will benefit most from e-visit service. Using a large data set from Taiwan’s National Health Insurance, this study verifies the efficiency and validity of the DTEVCA. The results indicate that this approach can accurately classify clinic in-office visits that could switch to e-visit service. The straightforward rules of this decision tree also give insurance agencies a clear guideline to understand the circumstance of using e-visits and predict the effect of implementing e-visits in Taiwan.
The result of this study can help the countries that have not yet implemented e-visits to improve the policy formulation process or academic researches. The DTEVCA can update the classification rules using new data to correct the biases and ensure the stability of the e-visit system. In addition, the concept of this approach is feasible not only for e-visit service but also for other “new services” such as new products or new policies.
Acknowledgment i
論文摘要 ii
THESIS ABSTRACT iii
Contents iv
List of Figures vi
List of Tables vii
Chapter 1 Introduction 1
1.1 Background and Motivation 1
1.2 Research Objectives 4
1.3 Research Scope and Limitation 5
Chapter 2 Literature Review 7
2.1 Definition of E-visits 7
2.2 Development History of E-visits 8
2.3 Advantage and Barrier of E-visits 10
2.4 Scope for E-visits 10
2.5 The Characteristics of Patients Who Use E-visits 11
2.6 Binary Classification 13
Chapter 3 Problem Description 16
3.1 Problem Description 16
3.2 Data Preparation 17
3.3 The Class Label Attribute 18
3.4 Classification 18
Chapter 4 The Decision-Tree Based E-Visit Classification Approach (DTEVCA) 20
4.1 Data Collection 21
4.2 Data Preparation 21
4.3 The Class Label Attribute 25
4.3.1 Expert Opinions 26
4.3.2 Expert Classification Model 28
4.4 E-Visit Classification Model Building 28
4.4.1 Model Training 29
4.4.2 Model Assessment 30
4.4.3 Model Selection 30
4.5 Time Complexity 31
Chapter 5 Computation Analysis 33
5.1 Data Description 34
5.2 The Classification by Experts 43
5.3 The Classification of E-Visits 49
5.4 Experiments 51
5.5 Summary 55
Chapter 6 Conclusion and Future Work 57
6.1 Conclusion 57
6.2 Future Work 58
Reference 59
Appendix A The Cross-Validation Accuracy of Three Experts’ Trees 63
Appendix B The Tree of Expert 1 64
Appendix C The Tree of Expert 2 65
Appendix D The Tree of Expert 3 67
Appendix E The Overview of the Test Datasets 68
Appendix F The Cross-Validation Accuracy of E-Visit Trees (CART) 69
Appendix G The Cross-Validation Accuracy of E-Visit Trees (C5.0) 70
Appendix H The Cross-Validation Accuracy of E-Visit Trees (Ctree) 71
Appendix I The Accuracy of 30 Test Datasets 72
Appendix J The Recall of 30 Test Datasets 73
Appendix K The Precision of 30 Test Datasets 74
Appendix L The Specificity of 30 Test Datasets 75
Appendix M The E-Visit Tree (C5.0) 76
Appendix N The Cross-Validation Accuracy of Random Forest 80
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