Sample size determination

TL;DR: Anthropometric determination of obesity and screening for its common primary comorbidities should be integrated as part of clinic baseline assessment of adult Nigerians attending semi-urban hospitals and those who had obesity-related primary co morbidities should become secondary target for risk reduction therapy and appropriate management.

TL;DR: In this paper , the authors examined the selection and management practices of coffee shade trees in a smallholder coffee-based agroforestry system in Gomma woreda, south-west Ethiopia along an elevation gradient.

TL;DR: Socio-cultural factors negatively influence ANC utilization in South Sudan. Cultural beliefs, norms, religion and role of husbands are key factors influencing ANC utilization.

TL;DR: Glycosylated haemoglobin is a surrogate marker for dyslipidemia and glycemic index in type 2 diabetes mellitus subjects.

TL;DR: The importance of sample size evaluation in clinical trials is reviewed and a general method is presented from which specific equations are derived for sample size determination or the analysis of power for a wide variety of statistical procedures.

TL;DR: The logrank test is commonly used in the analysis of clinical trials in chronic diseases such as cancer and the numbers required are considerably smaller than those in existing tables when the event-free proportions are small, but otherwise comparable.

TL;DR: This paper presents sample size estimation methods in a single review and comments on their application in practice.

TL;DR: These methods are based on standard large-sample formulae for determining the power of chi-square tests, and emphasis is given to determinations for Pearson chi 2 tests in multiway contingency tables.