Browse Items (6 total)

Background. Obesity can be divided into "general" and "central." Since abnormal glucose and lipid metabolism are more strongly associated with central obesity, it may not be adequate to use a general measure, such as weight-for-height index, to…

INTRODUCTION: Obtaining a representative patient sample for research purposes can be challenging. Classic probability sampling can be trusted, but these approaches are not always feasible; yet alternatives may introduce bias. We summarize relevant…

BACKGROUND: The National Ambulatory Medical Care Survey (NAMCS) informs a wide range of important policy and clinical decisions by providing nationally representative data about outpatient practice. However, the validity of the NAMCS methods has not…

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