Does the missing data imputation method affect the composition and performance of prognostic models?
المؤلفون المشاركون
المصدر
Iranian Red Crescent Medical Journal
العدد
المجلد 14، العدد 1 (31 يناير/كانون الثاني 2012)، ص ص. 31-36، 6ص.
الناشر
تاريخ النشر
2012-01-31
دولة النشر
الإمارات العربية المتحدة
عدد الصفحات
6
التخصصات الرئيسية
الموضوعات
الملخص EN
Background : We already showed the superiority of imputation of missing data (via Multivariable Imputation via Chained Equations (MICE) method) over exclusion of them ; however, the methodology of MICE is complicated.
Furthermore, easier imputation methods are available.
The aim of this study was to compare them in terms of model composition and performance.
Methods : Three hundreds and ten breast cancer patients were recruited.
Four approaches were applied to impute missing data.
First we adopted an ad hoc method in which missing data for each variable was replaced by the median of observed values.
Then 3 likelihood-based approaches were used.
In the regression imputation, a regression model compared the variable with missing data to the rest of the variables.
The regression equation was used to fill the missing data.
The Expectation Maximum (E-M) algorithm was implemented in which missing data and regression parameters were estimated iteratively until convergence of regression parameters.
Finally, the MICE method was applied.
Models developed were compared in terms of variables significantly contributed to the multifactorial analysis, sensitivity and specificity.
Results : All candidate variables significantly contributed to the MICE model.
However, grade of disease lost its effect in other three models.
The MICE model showed the best performance followed by E-M model.
Conclusion : Among imputation methods, final models were not the same, in terms of composition and performance.
Therefore, modern imputation methods are recommended to recover the information.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Baneshi, M. R.& Talei, A. R.. 2012. Does the missing data imputation method affect the composition and performance of prognostic models?. Iranian Red Crescent Medical Journal،Vol. 14, no. 1, pp.31-36.
https://search.emarefa.net/detail/BIM-311798
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Baneshi, M. R.& Talei, A. R.. Does the missing data imputation method affect the composition and performance of prognostic models?. Iranian Red Crescent Medical Journal Vol. 14, no. 1 (Jan. 2012), pp.31-36.
https://search.emarefa.net/detail/BIM-311798
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Baneshi, M. R.& Talei, A. R.. Does the missing data imputation method affect the composition and performance of prognostic models?. Iranian Red Crescent Medical Journal. 2012. Vol. 14, no. 1, pp.31-36.
https://search.emarefa.net/detail/BIM-311798
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 36
رقم السجل
BIM-311798
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر