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Practitioner's Guide To Stratified Random Sampling: Part 1

This is the first of two articles on stratified random sampling. In the first article, I discuss when it might be advantageous to select a random sample that has been divided into multiple ... read more

1. Introduction

In the sampling process it is convenient to distinguish between population, sample and sampling. Figure 1.1 illustrates ... Simple random sampling is not frequently used in fisheries research, except ... read more

Sampling, Part 2: Sampling Strategies

This, in turn, brings me to the point of this column’s topic: selecting appropriate sampling strategies that will ultimately guide a course of action, whether it is in the area of food production or, ... read more

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Guidance for Industry: Nutrition Labeling Manual - A Guide for Developing and Using Data Bases

The sample for nutrient analysis shall consist of a composite of 12 subsamples (consumer units), taken 1 ... sampling. Several of the most commonly used probability sampling methods are simple random ... read more

Choosing The Right Investment Strategy, Part I: Passive Investing

I will explore Passive Investing in this piece, followed by various forms of active management in Part II. The enduring debate among financial practitioners is whether ... (4) Further Research 1. A ... read more

A two decade dementia incidence comparison from the Cognitive Function and Ageing Studies I and II

Three areas (CFAS I) were selected for new sampling two decades later (2008 ... were included in the dementia diagnosis if they took part in the interviews (see Fig. 1). In CFAS I a stratified subset ... read more

Quality Measures to Assess Care Transitions for Hospitalized Children

For patients with >1 admission during the study period, only the first hospitalization was included. At the children’s hospitals, we used a stratified random sampling approach to ... First, pediatric ... read more

Obstetric Anesthesia Workforce Survey: A 30-Year Update

Hospitals were selected using a stratified (by geographic regions and number of hospital births) random sampling scheme ... surveys returned were part of the current estimates. Table 1 contains data ... read more

A guide for the design and conduct of self-administered surveys of clinicians

Sample selection can be random (probability design) or deliberate (nonprobability design).6 Probability designs include simple random sampling, systematic random sampling, stratified ... this guide ... read more

Plasma Tie2 is a tumor vascular response biomarker for VEGF inhibitors in metastatic colorectal cancer

Anti-angiogenic VEGF inhibitors (VEGFi) have become some of the most widely prescribed drugs in oncology 1. Despite intense effort to find ... estimation of the distribution of a variable by random ... read more

Practitioner's Guide To Statistical Sampling: Part 1

Nevertheless random sampling is met with some skepticism. How can the practitioner demonstrate that random sampling ... the remaining employees did not sign meal break waivers. Figure 1 below is a ... read more

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