What is the causal effect of gun control on life expectancy? b. What potential sources of bias might there be in the regression model?

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ISBN:9781119256830
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I ran these regressions in SAS but don't know how to interpret them.

1a. What is the causal effect of gun control on life expectancy?

b. What potential sources of bias might there be in the regression model?

Variable
Definition
lifeexpecti
Life expectancy at birth, in years, in state i,
2010
medinci
Median household income, in $1,000, in
state i, 2010
uninsuredi
Percentage of population (ages 0-64) in
state i, without health insurance, 2008-2010
smoks
Percentage of adults in state į who smoked,
2006-2012
akesitx
Percentage of adults in state į who were
obese (BMI at least 30), 2006-2012
Number of births to teenage mothers in
state į per 1,000 females aged 15-19, 2010
Dummy variable = 1 if state į had a firearm
law protecting children, 0 otherwise, 2010
Percentage of population in state į that lived
in a metropolitan statistical area, 2010
teeabitthi
gunlaw
mettai
Transcribed Image Text:Variable Definition lifeexpecti Life expectancy at birth, in years, in state i, 2010 medinci Median household income, in $1,000, in state i, 2010 uninsuredi Percentage of population (ages 0-64) in state i, without health insurance, 2008-2010 smoks Percentage of adults in state į who smoked, 2006-2012 akesitx Percentage of adults in state į who were obese (BMI at least 30), 2006-2012 Number of births to teenage mothers in state į per 1,000 females aged 15-19, 2010 Dummy variable = 1 if state į had a firearm law protecting children, 0 otherwise, 2010 Percentage of population in state į that lived in a metropolitan statistical area, 2010 teeabitthi gunlaw mettai
Table 1. Life expectancy and gun control laws
Means
Regression
With gun
Without gun
Difference
OLS
control law
control law
[1]
[2]
[3]
[4]
A. Dependent variable
(intercept)
89.74
Life expectancy
79.567
77.957
-1.610
B. Controls
Median income
54.043
47.201
-6.843
-0.0199
Uninsured
13.186
14.990
1.8043
0.0459
Smoke
17.148
19.423
2.276
-0.2220
Obesity
26.429
28.500
2.071
-0.1266
Teen Birth
28.305
38.370
10.065
-0.0782
Metro
84.311
66.793
-17.518
-0.0156
Gun law
1.000
0.000
1.000
0.4845
1 a. What is the causal effect of gun control laws on life expectancy?
b. What potential issues might there be with this regression model (ie. Potential sources of bias) ? Be
specific
Transcribed Image Text:Table 1. Life expectancy and gun control laws Means Regression With gun Without gun Difference OLS control law control law [1] [2] [3] [4] A. Dependent variable (intercept) 89.74 Life expectancy 79.567 77.957 -1.610 B. Controls Median income 54.043 47.201 -6.843 -0.0199 Uninsured 13.186 14.990 1.8043 0.0459 Smoke 17.148 19.423 2.276 -0.2220 Obesity 26.429 28.500 2.071 -0.1266 Teen Birth 28.305 38.370 10.065 -0.0782 Metro 84.311 66.793 -17.518 -0.0156 Gun law 1.000 0.000 1.000 0.4845 1 a. What is the causal effect of gun control laws on life expectancy? b. What potential issues might there be with this regression model (ie. Potential sources of bias) ? Be specific
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