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Author: Alex

Using t-tests: Beware of Land Mines

Posted on November 3, 2018November 11, 2018 by Alex

You are testing a new drug treatment for HIV, and your new drug costs 10x…

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Cox Regression: The Basic Idea

Posted on October 28, 2018September 10, 2020 by Alex

In survival analysis, we want to model the time to a first event, often death. …

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Six Great Learning Resources for Survival Analysis

Posted on October 20, 2018September 10, 2020 by Alex

Here are some books and courses for survival analysis that are useful for learning it. …

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Modeling Disease Progression or Mood Evolution/Ecological Momentary Assessment: Discrete Latent State or Continuous-Valued ‘True’ Trajectory?

Posted on October 9, 2018December 16, 2018 by Alex

Say you want to model the evolution over time of a disease like HIV in…

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The Probabilistic Cauchy Schwartz and the Analysis Cauchy Schwartz.

Posted on October 8, 2018October 8, 2018 by Alex

I’d often seen two different versions of Cauchy Schwartz (CS).  In analysis and linear algebra…

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SARA: An App for Engaging Users in Mobile Health Data Collection

Posted on October 6, 2018October 27, 2018 by Alex

I recently read the paper “SARA: A Mobile App to Engage Users in Health Data…

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Disease Progression Modeling: Six Main Questions

Posted on September 11, 2018September 11, 2018 by Alex

An important area in applied and methodological statistics as well as machine learning is disease…

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Where R Shines Over Python: Statistical Models

Posted on August 31, 2018August 31, 2018 by Alex

Python is the language of choice for many data scientists and researchers who analyze data,…

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Estimating Treatment Effect: Feature or Two Sample Test?

Posted on August 29, 2018August 30, 2018 by Alex

Say you have an experiment and you want to test whether there is a difference…

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The Five Linear Regression Assumptions: Testing on the Kaggle Housing Price Dataset

Posted on August 26, 2018September 4, 2020 by Alex

In this post we check the assumptions of linear regression using Python. Linear regression models…

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Categories

  • general
  • hypothesis testing
  • linear and generalized linear models
  • Longitudinal Data Analysis
  • Missing Data
  • Neural Networks+Deep Learning
  • Numerical Linear Algebra
  • optimization
  • Survival
  • Time series
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