Kalp Yetmezliği Hastalarında Kritik Parametre Seçimi ve Sağkalım Modeli Geliştirilmesi

Year 2021, , 155 - 162, 10.05.2021

Ahmet Aydın

https://doi.org/10.21605/cukurovaumfd.933886

Cited By: 1

Abstract

Kardiyovasküler hastalıklar dünya çapında en fazla ölüme neden olan hastalıklar arasındadır. Kalp yetmezliği de sık karşılaşılan hastalıklardan biridir ve hastanın taşıdığı risk seviyesine göre ölüm oranları değişiklik göstermektedir. Ölüm oranlarındaki bu belirgin farklılık, hangi hastaların daha kötü prognoza sahip olduğunu tahmin edebilen ve daha yoğun tıbbi tedaviden ve/veya sol ventriküler destek cihazlarından ve kalp nakli tedavilerinden daha fazla yararlanabilecek olan risk grubunu belirleyen yöntemlerin geliştirilmesinin ihtiyaç olduğunu ortaya çıkarmıştır. Çalışma kapsamında kalp yetmezliği bulunan 299 hastanın verileri ve Cox, RSF ve GSB yöntemleri kullanılarak sağkalım modelleri geliştirilmiştir. Ayrıca iki farklı yöntem kullanılarak kalp yetmezliği hastalarının sağkalım modelinin geliştirilmesinde kritik rol oynayan parametreler belirlenmiştir. Veri setindeki tüm parametreler yerine belirlenen bu parametreler kullanılarak bir model oluşturulduğunda daha yüksek başarı elde edilmiştir ve elde edile bu sonuç aynı veri setini kullanan başka çalışmaların sonuçlarında da daha iyidir. Sonuç olarak seçilen parametre seti ve RSF yöntemi kullanılarak kalp yetmezliği hastaları için yüksek doğrulukla tahmin yapabilen bir sağkalım modeli geliştirilmiştir.

Keywords

Kalp yetmezliği, Sağkalım analizi, Cox, RSF, GBS

Critical Parameter Selection and Survival Model Development for Heart Failure Patients

Abstract

Cardiovascular diseases are among the diseases that cause the most deaths worldwide. Heart failure is also one of the most common diseases, and mortality rates vary according to the patient’s risk level. This distinct difference in mortality revealed the need to develop methods that could predict which patients have a worse prognosis and identify the risk group that would benefit more from intensive medical treatment and/or left ventricular assist devices and heart transplant treatments. In this study, survival models were developed using the dataset of 299 heart failure patients and Cox, Random Survival Forest, and Gradient Boosting Survival. Two different approaches are also used to determine the critical parameters in developing the survival model for heart failure patients. When a model is created using these parameters instead of all parameters in the dataset, higher success has been achieved, and this result is also better than the other studies using the same dataset. In conclusion, a survival model that can predict with high accuracy was developed for heart failure patients using the selected parameter set and Random Survival Forest.

Keywords

Heart failure, Survival analysis, Cox, Random survival forest, Gradient boosting survival

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