Assessment of the Importance of a New Risk Factor in Prediction Models
نویسندگان
چکیده
منابع مشابه
assessment of the importance of a new risk factor in prediction models
results age was selected as the important factor based on all 7 statistics. exclusion of age variable decreased c index from 0.75 to 0.68 and r square from 0.25 to 0.15. duration of hospitalization was important based on 4 statistics. exclusion of this variable decreased r square from 0.25 to 0.21. while gender was a useful variable in separation of patients into risk groups, its omission did n...
متن کاملAssessment of the Importance of a New Risk Factor in Prediction Models
BACKGROUND Discovery of new risk factors poses new challenges on how to quantify their added value and importance in risk prediction improvement. OBJECTIVES The aim of this study was to apply different statistics and to quantify the importance of some risk factors in acute myocardial infarction (AMI). PATIENTS AND METHODS In a retrospective cohort study, 607 patients with AMI, aged more tha...
متن کاملthe impact of training on second language writing assessment: a case of raters’ biasedness
چکیده هدف اول این تحقیق بررسی تأثیر آموزش مصحح بر آموزش گیرندگان براساس پایایی نمره های آنها در پنج بخش شامل محتوا ، سازمان ، لغت ، زبان و مکانیک بود. هدف دوم این بود که بدانیم آیا تفاوتهای بین آموزشی گیرندگان زن و مرد در پایایی نمرات آنها وجود دارد. برای بررسی این موارد ، ما 90 دانشجو در سطح میانه (متوسط) که از طریق تست تعیین سطح شده بودند انتخاب شدند. بعد از آنها خواستیم که درباره دو موضوع ا...
15 صفحه اولassessment of the effect of honey as a topical therapy for intra oral wound healing in rat.
چکیده ندارد.
15 صفحه اولassessment of the efficiency of s.p.g.c refineries using network dea
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Iranian Red Crescent Medical Journal
سال: 2015
ISSN: 2074-1804,2074-1812
DOI: 10.5812/ircmj.20949