SUMMARY New rank-based methods for analyzing data from multisite clinical trials are presented ·in the context of "mixed" linear models. In contrast to current rank methods, the new procedures test for a drug main effect in the presence of a random drug by site interaction (or drug by investigator interaction when there is only one investigator per site). Analogous procedures are also provided ...

Objectives This investigation aimed to determine the validity of script concordance test (SCT), compared with clinical-case-related short-answer management problems (SAMP), in fourth-year medical students. Methods This retrospective study was conducted at the Medical School of Lille University. Cardiology and gynecology examinations both included 3 SCT and 2 clinical-case-related SAMP.  Final...

Objective: To determine whether equine-assisted therapy (hippotherapy) produces alterations in the balance of the elderly. Methods: The sample included 17 older adults who were divided into experimental (7 subjects) and control (10 subjects) groups. Stabilometry data were acquired with a force platform. The Timed Up and Go test (TUG) was used for clinical analysis of seated balance, transfer fr...

OBJECTIVE To determine whether equine-assisted therapy (hippotherapy) produces alterations in the balance of the elderly. METHODS The sample included 17 older adults who were divided into experimental (7 subjects) and control (10 subjects) groups. Stabilometry data were acquired with a force platform. The Timed Up and Go test (TUG) was used for clinical analysis of seated balance, transfer fr...

Non-parametric tests that deal with two samples include scores tests (such as the Wilcoxon rank sum test, normal scores test, log istic scores test, Cauchy scores test, etc.) and Fisher’s randomization test. B ecause the non-parametric tests generally require a large amount of computational work, there are few studies on small-sample properties, although asymptotic properties with regard to var...

The principal topic covered in this paper is the development of a test of the hypothesis that two regression lines are parallel under the conditions that the two sets of error terms are normally distributed but 'With (possibly) different variances. An incidental topic which is covered concerns a test for the slope of a single regression line; no normality assumption is required for this second ...

This article introduces the use of fuzzy P -values and confidence intervals (Geyer and Meeden 2005) with classical nonparametric tests, specifically with the sign test and the one-sample and two-sample Wilcoxon tests. The method presented can be applied to any test and provides simple exact fuzzy tests at any level in the presence of ties. It also provides the corresponding fuzzy confidence int...

There are few techniques available for testing if modes take specified values. We show that standard tests of location such as the t-test and the Wilcoxon test, which test for the mean and median respectively, can perform poorly as tests for modes when the data is other than unimodal and symmetric. Carolan and Rayner [1] proposed a score test of location for symmetric nonnormal data. We conside...