نتایج جستجو برای: repeated measure
تعداد نتایج: 446345 فیلتر نتایج به سال:
menorrhagia is one of the most common gynecological problem and leading causes of poor quality of life and iron deficiency anemia in women of reproductive age. research in gynecological field relies heavily on repeated measure designs. repeated measure studies are helpful in understanding how factors of interest change over time. our goal is to apply statistical methods which are appropriate fo...
abstract this study aimed at investigating the possible relationship between self-assessment in writing and self-regulation of iranian efl learners. the main purpose of the study was not only to report and inform about this relationship, but also to investigate and find practical outcomes of the incorporation of self-assessment in writing, such as improving writing skill. the research was carr...
اشریشیا کلیo157:h7 از مهمترین پاتوژن های انسانی بوده و عامل ایجاد عفونت های غذایی می باشد. این مطالعه با هدف بررسی اثر اسیداستیک،edta، نیتریت به صورت تکی و ترکیبی بر رشد اشریشیاکلی o157:h7 انجام شد. برای هر حالت سه تکرار در نظر گرفته شد. روند تغییرات لگاریتم تعداد باکتری در گروههای مختلف در دوره 7 روزه توسط آزمون آماری repeated measure anova مورد تجزیه و تحلیل اماری قرار گرفت و مقایسه 2 تایی گر...
Repeated measures correlation (rmcorr) is a statistical technique for determining the common within-individual association for paired measures assessed on two or more occasions for multiple individuals. Simple regression/correlation is often applied to non-independent observations or aggregated data; this may produce biased, specious results due to violation of independence and/or differing pat...
Fisher (1943) claimed that the expected value of sample variance number species found in large samples, each n specimens taken from same population, is asymptotically ?log2. This at odds with ?logn obtained directly Ewens Sampling Formula (ESF), where ? specifies rate which new are found. To resolve this apparent contradiction, we assume frequency spectrum population determined by ESF and sampl...
این تحقیق کاوشی است به منظور تعیین عوامل مرتبط با وجدان کاری کارکنان که در واحدهای ستادی شرکت ملی پالایش و پخش فرآورده های نفتی ایران با نمونه ای به حجم 135 نفر انجام پذیرفته است. جمع آوری داده ها از طریق پرسشنامه ای با 36 سوال که براساس مقیاس درجه بندی لیکرت با گزینه های خیلی زیاد، زیاد، متوسط، کم و خیلی کم طراحی شده بود، صورت گرفته و تجزیه و تحلیل اطلاعات برای داده های نرمال با استفاده از ضری...
BACKGROUND The primary analysis in a longitudinal randomized controlled trial is sometimes a comparison of arms at a single time point. While a two-sample t-test is often used, missing data are common in longitudinal studies and decreases power by reducing sample size. Mixed models for repeated measures (MMRM) can test treatment effects at specific time points, have been shown to give unbiased ...
Discriminant analysis (DA) encompasses procedures for classifying observations into groups (i.e., predictive discriminative analysis) and describing the relative importance of variables for distinguishing amongst groups (i.e., descriptive discriminative analysis). In recent years, a number of developments have occurred in DA procedures for the analysis of data from repeated measures designs. Sp...
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