74 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Statistical notes for clinical researchers: Sample size calculation 1. Comparison of two...

introduction  self-efficacy in clinical performance had an important role in applying competencies; also competencies and self-efficacy in clinical performance influenced to quality care of nursing and midwifery students. so the present study aimed to define the relationship between clinical competencies and clinical self-efficacy among nursing and midwifery students. materials and methods  thi...

Lymphatic filariasis is a neglected parasitic disease that leading cause of long-term disability. Information obtained from genome sequencing filarial worm can help us identify systems in the are likely to be useful for novel drug design. Brugia ( B .) malayi still only lymphatic-dwelling parasite with nearly complete, fully annotated, and published genome. However, most previous studies were b...

Abstract Background We suggest an adaptive sample size calculation method for developing clinical prediction models, in which model performance is monitored sequentially as new data comes in. Methods illustrate the approach using diagnosis of ovarian cancer ( n = 5914, 33% event fraction) and obstructive coronary artery disease (CAD; 4888, 44% fraction). used logistic regression to develop a co...