Multireader, multicase receiver operating characteristic analysis: an empirical comparison of five methods.

Rationale And Objectives: Several statistical methods have been developed for analyzing multireader, multicase (MRMC) receiver operating characteristic (ROC) studies. The objective of this article is to increase awareness of these methods and determine if their results are concordant for published datasets.

Materials And Methods: Data from three previously published studies were reanalyzed using five MRMC methods.

The effect of bright light on sleep and behavior in dementia: an analytic review.

The purpose of this study was to examine bright light as a means of intervention in sleep-wakefulness and behavior disorder among patients with dementia through a review of the relevant literature. Fourteen articles were reviewed in depth for study design, intervention protocols, concurrent control groups, subject characteristics, and outcome measures of behavior and sleep. Previous studies found that behavior disorders improved, although not all the studies reviewed reported a quantitative measure of improvement.

A comparison of effectiveness of bladder training and pelvic muscle exercise on female urinary incontinence.

This study compared the effectiveness of bladder training versus pelvic muscle exercises in the treatment of urinary incontinence in women. It was revealed that the two intervention groups showed improvement compared with the control group, but differed in their effects on outcome measures. The pelvic muscle exercise group was more effective in increasing the peak and the average pressures of pelvic muscle contraction.

Researcher contributions and fulfillment of ICMJE authorship criteria: analysis of author contribution lists in research articles with multiple authors published in radiology. International Committee of Medical Journal Editors.

Purpose: To determine the number of researchers who fulfill the International Committee of Medical Journal Editors (ICMJE) authorship criteria and to evaluate individual contributions.

Materials And Methods: The author contribution lists of Radiology articles published between 1998 and 2000 with at least three authors were reviewed. The fulfillment of ICMJE criteria for authorship and the contribution percentage were assessed according to each researcher's position in the byline and nationality (American vs international), number of researchers per article, and year of publication.

A randomized trial on the effects of body positions on lung function with acute respiratory failure patients.

In a randomized controlled trial, we compared the potential benefits of position changes on arterial oxygen pressure in 32 patients with acute respiratory failure, maintained on artificial ventilators, distinguishing prominently as left-sided, right-sided or bilateral lung disease. Our results indicate that randomly alternating supine, left-lateral, right-lateral and prone positions have influence on gas exchange and that improvement of arterial oxygen pressure is associated with various positions. Our results show, therefore, that nursing care of patients on artificial ventilators involving changes in body positions (a simple and noninvasive means of assistance) has important therapeutic consequences and warrants attention in clinical practice.