Statistics is a broad mathematical discipline dealing with techniques for the collection, analysis, interpretation, and presentation of numerical data. Data are information used for reasoning, discussion, or calculation; data are the foundation of modern scientific inference. Data may be obtained by a formal sampling procedure, by recording responses to experimental conditions, or by observing ...

background and purpose: providing health services in health centers is a challenging and risky job. so that, realization of quality, performance, efficiency, and fairness in the provision of such services needs a proper condition to ensure that the stress experienced by the personnel is minimized. the present study is a survey of the factors effective on job stress among the nurses working in t...

◮Using the experimental data, we produce different performance measurements, such as precision and recall, that are standard measures that are used to evaluate the performances of an Information Retrieval System (IRS) for a given experiment. Starting from these performance measurements, we can compute descriptive statistics, such as mean or median, used to summarize the overall performances ach...

Because the field of statistics has become so important in medicine, it is well worth the time of a physician in nuclear medicine to become acquainted with the lan guage of statistics, the elementary concepts, and a few of the more commonly used procedures. For this purpose we are presenting these essentials in a series of six short, nontechnical papers. Obviously, what can be accom plished in ...

INTRODUCTION Rheumatoid arthritis as one of the most common autoimmune diseases is known to be one of the leading causes of disability. Sleep disorders have direct influence on patient's life. According to studies, sleep problems are known to have negative impact on well-being and functioning, but the exact nature of relationship between sleep disorders and Rheumatoid arthritis is not completel...