نتایج جستجو برای: p value
تعداد نتایج: 1874264 فیلتر نتایج به سال:
We propose an approximate distribution for the gapped local score of a two sequence comparison. Our method stands on combining an adapted scoring scheme that includes the gaps and an approximate distribution of the ungapped local score of two independent sequences of i.i.d. random variables. The new scoring scheme is defined on h-tuples of the sequences, using the gapped global score. The influ...
INTRODUCTION We evaluated the progress in the self-perceived competence of medical students in a range of common clinical, practical and personal skills, in their final six months of training. METHODS The study was conducted on 65 final-year medical students undertaking their senior clerkship training at International Medical University, Malaysia. Questionnaire surveys were conducted at the b...
Asymptotic and exact conditional approaches have often been used for testing agreement between two raters with binary outcomes. The exact conditional approach is guaranteed to respect the test size as compared to the traditionally used asymptotic approach based on the standardized Cohen's kappa coefficient. An alternative to the conditional approach is an unconditional strategy which relaxes th...
Writers taking this approach are recognizable by this admit/ dismiss pattern. Yes, the sample size is small, but we are confident it includes the major points of view. Okay, the statistical tests were a fishing expedition, but our p value was significant. In The Reflection, the writer lays out the aspects of the research design that create uncertainty about the knowledge contribution, paying at...
P-values are useful statistical measures of evidence against a null hypothesis. In contrast to other statistical estimates, however, their sample-to-sample variability is usually not considered or estimated, and therefore not fully appreciated. Via a systematic study of log-scale p-value standard errors, bootstrap prediction bounds, and reproducibility probabilities for future replicate p-value...
the many honorifics bestowed on the articles in this historical series, it is doubtful that any have had applied the best—funny. The rhetorical zest and smiling outrage that Joseph Berkson brings to his puncturing of the quasi-religious precepts of traditional statistics in his classic article 1 recalls for me a public debate I witnessed in the 1980s between a highly respected statistician and ...
مقدمه: سرطان پروستات شایع ترین سرطان تشخیص داده شده و دومین علت مرگ مردان آمریکایی می باشد. از بین همه سرطانها، فقط سرطان پروستات است که شیوع آن به سرعت با افزایش سن افزایش می یابد؛ بنابراین افزایش سن مهم ترین فاکتور خطر برای ابتلا به سرطان پروستات است. همچنین برخی مطالعات تاریخچه خانوادگی مثبت سرطان پروستات، چاقی و وازکتومی قبلی را به عنوان عوامل خطر در ابتلا به سرطان پروستات پیشنهاد می کنند. ...
مقدمه و هدف پیوند کلیه موثرترین روش درمان نارسایی مزمن پیشرفته کلیهesrd محسوب می شود. از آنجایی که بقاء و عملکرد کلیه پیوندی از اهدا کننده کاداور (مرگ مغزی) به طور متوسط کمتر از اهدا کننده زنده می باشد، هرگونه اقدام جهت بهبود عملکرد کلیه از جمله افزایش دیورز در ساعات اولیه پیوند، کمک شایانی به بیماران پیوند کلیه از کاداور می باشد. هدف از این مطالعه ارزیابی برون ده ادراری در 4 ساعت و 24 ساعت ا...
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