Association of statistics with biostatistics Research

Introduction to biostatistics: Part 2, Descriptive statistics.

Descriptive statistics include measures of central tendency and variability. Measures of central tendency include mean, median, and mode. The mean is the arithmetic average of data from interval or ratio scales. The median reflects the 50th percentile score. The mode is the most frequently occurring value of a data distribution. Measures of variability include range, interquartile range, standa...

1.3 Agreement Statistics TUTORIAL IN BIOSTATISTICS Kappa coe cients in medical research

Kappa coe cients are measures of correlation between categorical variables often used as reliability or validity coe cients. We recapitulate development and de nitions of the K (categories) by M (ratings) kappas (K ×M), discuss what they are wellor ill-designed to do, and summarize where kappas now stand with regard to their application in medical research. The 2×M (M¿2) intraclass kappa seems ...

Biostatistics Series Module 7: The Statistics of Diagnostic Tests

Crucial therapeutic decisions are based on diagnostic tests. Therefore, it is important to evaluate such tests before adopting them for routine use. Although things such as blood tests, cultures, biopsies, and radiological imaging are obvious diagnostic tests, it is not to be forgotten that specific clinical examination procedures, scoring systems based on physiological or psychological evaluat...

Teaching Biostatistics to Clinical Research Groups

The aim is to present a teaching model in biostatistics that provides a link between biostatistical theory and medical science. The course is designed for multi-professional research groups, consisting of a supervisor, at least one doctoral student or post-doctoral scientist and other individuals working on the same project. The course is interactive and all participants have to apply the biost...

statistics in trauma research