Summary of Joshua Angrist & Jörn-Steffen Pischke's Mastering 'Metrics

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#1 Without universal health insurance, Americans are less healthy than Canadians, who spend just two-thirds as much on care.

#2 Americans with health insurance are healthier than those without. Table 1. 1 Health of Uninsured and Insured Americans Note: NHIS 2009 data. Health index is based on the 5-to-1 scale: excellent health is given a score of 5, while poor health is given a score of 1. But the story isn’t so simple. First, a word about the statistical technique that produced this table: logistic regression. logistic regression is one method of statistical analysis that attempts to explain differences in an outcome variable between two groups by considering the variables in an inclusion/exclusion list: variables that predict whether a person has health insurance, or whether they are in the treatment group, and variables that predict the health index itself. The logistic regression model includes variables from the list in addition to other independent variables, and it models the dependent variable as a linear function of all these independent variables and their interactions. 4 The model is based on statistical theory and can be estimated using software like Stata, SPSS, or R. -> The National Health Interview Survey asks Americans if their health is excellent, very good, good, fair, or poor. Those with health insurance are healthier than those without, a difference of about.

#3 If you want to understand the link between health insurance and health, you must compare people with and without insurance in a way that takes other factors into account.

#4 To understand the link between health insurance and health, you must compare people with and without insurance in a way that takes other factors into account.

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