Category Archives: Statistical studies

Is your public pool free from urine?

Posted on March 3, 2017 by

Some people believe that the answer to the question posted in the title of the blog post is no. Now there is evidence to back it up. The study profiled here also gives an indication of how serious the problem … Continue reading →

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Is there anything we can do to avoid the flu?

Posted on January 13, 2017 by

In many places, influenza activity peaks during the period in between December and February. What are some of the best practices to reduce the spread of the flu and to minimize the risk of catching it? The standard recommendations are: … Continue reading →

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What Are Helicopter Parents Up To?

Posted on February 8, 2012 by

We came across several interesting graphics about helicopter parents. These graphics give some indication as to what the so called helicopter parents are doing in terms of shepherding their children through the job search process. These graphics are the screen … Continue reading →

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Is College Worth It?

Posted on January 8, 2012 by

Is college worth it? This was the question posed by the authors of the report called College Majors, Unemployment and Earnings, which was produced recently by The Center on Education and the Workforce. We do not plan on giving an … Continue reading →

Posted in Commentary, Descriptive statistics, Exploratory Data Analysis (EDA), Observational Studies, Statistical studies, Statistics | Tagged , , , , | Leave a comment

Reducing Door-To-Balloon Time Saves Lives

Posted on August 28, 2011 by

For the patients who experience a heart attack caused by a complete blockage of blood supply to the heart (called ST segment elevation myocardial infarction or STEMI), quick response is critical. These patients should be treated with artery-opening procedures soon … Continue reading →

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Learning from bad experiments

Posted on March 31, 2011 by

Thinking about bad experiments is a good device helping reinforce the concepts of experimental design. No one should deliberately perform an experiment with a defective design. However, thinking about such designs is a great learning device. For example, why does … Continue reading →

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Thinking about study designs

Posted on March 31, 2011 by

When learning the designs of research studies, an effective exercise is to look at examples drawn from actual research studies. In this post, we present a series of eight research studies. For each study, the exercise is to classify each … Continue reading →

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Design of Observational Studies

Posted on March 30, 2011 by

There are numerous ways to collect data when conducting research. The study design depends greatly on the nature of the research question. There are two key areas of statistics that provide ways of collecting data, namely the idea of sampling … Continue reading →

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Design of experiments

Posted on March 9, 2011 by

When the goal in a statistical study is to understand cause and effect, experiments are the only way to obtain convincing evidence for causation. This is an introductory discussion on experimental design, introducing its vocabulary, its characteristics and its principles. … Continue reading →

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Is type 2 diabetes preventable in high risk population?

Posted on February 18, 2011 by

Diabetes adversely affects many major organs, including heart, blood vessels, nerves, eyes and kidneys. The complications related to these organs develop gradually, but they can eventually be disabling or even life threatening. Treatment of diabetes can prevent some of these … Continue reading →

Posted in Randomized Experiments, Statistical studies | Tagged , , , , | 1 Comment