Survival Analysis

Chapter 13 Survival Analysis

Survival analysis is a way to describe how long things last. It is often used to study human lifetimes, but it also applies to “survival” of mechanical and electronic components, or more generally to an interval in time before any kind of event—or even an interval in space.

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We’ll start with a simple example, the lifespans of light bulbs, and then consider a more substantial example, age at first marriage and how it has changed in the United States over the last 50 years.

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Listing 13.0.1. Python Code

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from os.path import basename, exists


def download(url):
    filename = basename(url)
    if not exists(filename):
        from urllib.request import urlretrieve

        local, _ = urlretrieve(url, filename)
        print("Downloaded " + local)


download("https://github.com/AllenDowney/ThinkStats/raw/v3/nb/thinkstats.py")

Listing 13.0.2. Python Code

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try:
    import empiricaldist
except ImportError:
    %pip install empiricaldist

Listing 13.0.3. Python Code

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import numpy as np
import pandas as pd
import matplotlib.pyplot as plt

from thinkstats import decorate

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