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Survival Analysis in Python

Use survival analysis to work with time-to-event data and predict survival time.

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4 Hours16 Videos48 Exercises3,068 Learners3850 XP

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Course Description

How long does it take for flu symptoms to show after exposure? And what if you don't know when people caught the virus? Do salary and work-life balance influence the speed of employee turnover? Lots of real-life challenges require survival analysis to robustly estimate the time until an event to help us draw insights from time-to-event distributions. This course introduces you to the basic concepts of survival analysis. Through hands-on practice, you’ll learn how to compute, visualize, interpret, and compare survival curves using Kaplan-Meier, Weibull, and Cox PH models. By the end of this course, you’ll be able to model survival distributions, build pretty plots of survival curves, and even predict survival durations.
  1. 1

    Introduction to Survival Analysis

    Free

    What problems does survival analysis solve, and what is censorship? You’ll answer these questions as you explore survival analysis data, build survival curves, and make basic estimations of survival time.

    Play Chapter Now
    What is survival analysis?
    50 xp
    What problems does survival analysis solve?
    100 xp
    Choose the right data for survival analysis
    50 xp
    Why use survival analysis?
    50 xp
    Identify the censorship type
    50 xp
    Preprocess censored data
    100 xp
    First look at censored data
    100 xp
    Your first survival curve!
    50 xp
    Draw a survival curve
    100 xp
    Long live democracy!
    100 xp
  2. 2

    Survival Curve Estimation

    In this chapter, you’ll learn how the Kaplan-Meier model works and how to fit, visualize, and interpret it. You’ll then apply this model to explore how categorical variables affect survival and learn how to supplement your analysis using hypothesis testing methods like the log-rank test.

    Play Chapter Now
    Fitting a Kaplan-Meier estimator
    50 xp
    How to fit a Kaplan-Meier estimator?
    100 xp
    Heart disease patient survival
    100 xp
    Visualizing your Kaplan-Meier model
    50 xp
    Plotting the survival curve
    50 xp
    Patient soreness treatment
    100 xp
    Applying survival analysis to groups
    50 xp
    Senators' terms in office
    100 xp
    Comparing patient soreness treatments
    100 xp
    The log-rank test
    50 xp
    Appropriate data for log-rank test
    100 xp
    Plotting and comparing survival curves
    100 xp
    Log-rank test
    100 xp
  3. 3

    The Weibull Model

    Discover how to model time-to-event data with parametric models. Learn how to use the Weibull model and the Weibull AFT model and what different purposes they serve. Use survival regression to make inferences about how covariates affect the survival function and learn how to select the best survival model for your data.

    Play Chapter Now
    Fitting the Weibull model
    50 xp
    Model prison data with Weibull
    100 xp
    Compare Weibull model parameters
    100 xp
    Weibull model with covariates
    50 xp
    Analyze heart patients characteristics
    100 xp
    Explore gender-LVDD interaction
    100 xp
    Visualization and prediction with Weibull model
    50 xp
    How do prior arrests impact re-arrest rate?
    100 xp
    Predict re-arrest rate
    100 xp
    Other distributions and model selection
    50 xp
    How good is the fit?
    100 xp
    Choose a parametric model
    100 xp
  4. 4

    The Cox PH Model

    Another chapter, another model! In this final chapter, you'll learn about the proportional hazards assumption and the role it plays in fitting and interpreting the Cox Proportional Hazards model. You’ll also learn how to predict new subjects' survival times using the Cox Proportional Hazards model.

    Play Chapter Now
    Fitting the Cox Proportional Hazards model
    50 xp
    Model prison data with Cox PH
    100 xp
    Custom Cox PH model
    100 xp
    Interpreting the Cox PH model
    50 xp
    Cox PH model survival time
    100 xp
    Plot covariate effects on survival
    100 xp
    The proportional hazards assumption
    50 xp
    Test the PH assumption with KM curves
    100 xp
    Test the PH assumption automatically
    100 xp
    Predicting with the Cox PH model
    50 xp
    Employee churn study
    100 xp
    Predict before they leave!
    100 xp
    Congratulations!
    50 xp

Datasets

Echocardiogram dataEmployee attrition dataRegimes dataPrison recidivism data

Collaborators

Hadrien Lacroix
Maggie Matsui

Prerequisites

Introduction to Regression with statsmodels in PythonHypothesis Testing in Python
Shae Wang Headshot

Shae Wang

Senior Data Scientist at Ripple

Shae Wang is a Senior Data Scientist at Ripple. She works on applied machine learning problems in the payments space, blockchain analytics, and experimentation. Before joining the blockchain industry, Shae was a Data Scientist at Uber and worked on a wide range of problems from OCR modeling and churn modeling to causal inference. Prior to her role at Uber, Shae used Neural Net to predict stock market movements for a startup. Shae earned her Masters in Computer Science with a focus in Machine Learning and Bachelor's degree in Statistics from Northwestern University.
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