Statsols Blog

Power Combined with Precision Helps Improve Sample Size Justification

 

Topics: Power & Sample Size

Why is Sample Size important?

Why Calculate Sample Size?

A good statistical study is one that is well designed and leads to valid conclusions. This however, is not always the case, even in published studies. In Cohen’s (1962) seminal power analysis of the journal of Abnormal and Social Psychology he concluded that over half of the published studies were insufficiently powered to result in statistical significance for the main hypothesis.

Topics: Power & Sample Size

nQuery Advisor + nTerim used to calculate sample size at St James Hospital, Dublin.

nQuery Advisor + nTerim was used to calculate sample size in a study conducted at St James Hospital, Dublin. The study evaluated the dose intensity and toxicities experienced by patients of normal and increased body mass index BMI treated with FOLFOX chemo- therapy, and demonstrated that overweight patients may tolerate doses based on actual body weight.

Topics: News & Events Power & Sample Size

Sample Size

What is Sample Size?

A good statistical study is one that is well designed and leads to valid conclusions. This however, is not always the case, even in published studies. In Cohen’s (1962) seminal power analysis of the journal of Abnormal and Social Psychology he concluded that over half of the published studies were insufficiently powered to result in statistical significance for the main hypothesis.

Topics: Industry News Power & Sample Size

Did you know?

 

 

Topics: Power & Sample Size

The DIA 2014 50th Annual Meeting

Next week from June 15-19, 2014, Statistical Solutions will be at the DIA 2014 50th Annual Meeting at the San Diego Convention Center, San Diego, CA.

 

Topics: Missing Data Industry News SOLAS for Missing Data Power & Sample Size

nQuery Advisor User Group for Clinical Trials.

We have created an nQuery Advisor user group for clinical trials on linkedIn.

The group has been created for exiting and future users of nQuery Advisor working in clinical trials to connect, support, share ideas, seek advice and draw from one anothers experiences.

Topics: Industry News Power & Sample Size

Power and Sample Size for Group Sequential Trials

New Features and Tests for Power and Sample Size

Statistical Solutions is delighted to announce it’s latest release nQuery Advisor + nTerim 2.0. the leading software for Power and Sample Size analysis.

Topics: Power & Sample Size