In the context of polytomous regression, as with any generalized linear model, robustness issues are well documented. Existing robust estimators designed to protect against misclassification, but do not outlying covariates. It is shown that this can have a much bigger impact on estimation and testing than misclassification alone. To address problem, two new introduced: model-type estimator an o...

caesarean section (c-section) rates have been increasing dramatically in the past decades around the world. this increase has been attributed to multiple factors such as maternal, socio-demographic and institutional fac-tors. therefore, this study examines the impact of maternal, socio-demographic and relevant characteristics on caesar-ean delivery in the northern region of bangladesh.this stud...

Pulmonary hypertension (PH) often occurs due to a left heart disease, such as myxomatous mitral valve disease (MMVD), in dogs and is diagnosed using Doppler echocardiography and estimated pulmonary arterial pressure. Diagnosis of PH in dogs requires expertise in echocardiography: however, the examination for PH is difficult to perform in a clinical setting. Thus, simple and reliable methods are...

چکیده شناسایی رقومی خاک ها بهعنوان ابزاری برای ایجاد اطلاعات مکانی خاک، راه حل هایی برای نیاز رو به افزایش نقشه های خاک با تفکیک مکانی بالا را تأمین می کند. بنابراین، باید روش های جدید بهمنظور بهدست آوردن اطلاعات مکانی خاک با تفکیک مکانی بالا توسعه پیدا کند. به همین منظور مطالعه ای جهت پیش بینی کلاس های خاک با استفاده از مدل های رگرسیونی در منطقه زرند کرمان طراحی گردید. در این مطالعه، مدل های ر...

The Federal Judicial Center prepared prototype materials for a software product designed to teach statistics to judges with legal examples. The prototype presents Fisher’s exact, chi-squared, and bivariate and multivariate logistic regression analyses in a hypothetical example of age discrimination litigation. The prototype also discusses odds ratios, expected values, and p-values. Eleven disti...

Madam, poor oral health is detrimental to quality of life, and imperils general health.1 Regular brushing of teeth is an effective way of ensuring good dental health.2 Poor dental hygiene has been reported to be associated with substance use, gender, poverty, and age.3,4 To describe these factors' association with self-reported oral hygiene behaviour in the past 30 days in Pakistani students of...

In the analysis of survival data with parametric models, it is well known that the Weibull model is not suitable for modeling survival data where the hazard rate is non-monotonic. For such cases, where hazard rates are bathtub-shaped or unimodal (or hump-shaped), log-logistic, lognormal, Birnbaun-Saunders, and inverse Gaussian models are used for the computational simplicity and popularity amon...

Statistical analysis included a bivariate analysis of the association between BRAF mutation status and patient and disease features, including age, sex, tumor size, lymph-node metastases, extrathyroidal extension, multifocality, lymphovascular invasion, involvement of surgical margins, and AJCC stage. Multivariate logistic-regression analyses of these features were conducted to examine which pr...

G*Power is a free power analysis program for a variety of statistical tests. We present extensions and improvements of the version introduced by Faul, Erdfelder, Lang, and Buchner (2007) in the domain of correlation and regression analyses. In the new version, we have added procedures to analyze the power of tests based on (1) single-sample tetrachoric correlations, (2) comparisons of dependent...