1. SUICIDE RATES: ARE THEY AFFECTED BY NATION’S ECONOMIC PERFORMANCE?
Chen Liang
EAS4480
4/20/17

2. hIGH GDP = LOW SUICIDE RATE?
Objective
Discover whether or not suicide rate is associated with nation’s economic development (GDP)
Two countries are investigated: United States and United Kingdom

3. dATA
Suicide and self-inflicted injury data in US and UK from 1960 to 2014
Scaled by population
Gross domestic product(GDP) in US and UK from 1960 to 2014
Scaled by deflator

5. US SUICIDE RATE TREND Slope Confidence Interval Least-square
-1.5*10-19
[-8.6*10-19,2.9 *10-19]
Bootstrap
-1.99*10-19
[-9*10-19,3 *10-19]

6. Histogram of the least-squares regression slope generated using the bootstrap method. The red circles represent the corresponding synthetic normal distribution for the same mean and standard deviation. Note the inclusion of positive slope values on the right tail.
Its not normal distributed but left skewed
Extreme values

7. Correlation Coefficient
GDP
SUCIDE RATE 1
SUICIDE RATE
P-VALUE
GDP
SUCIDE RATE 1
0.6108
SUICIDE RATE
P value is greater than 0.05, so there is no significant correlation between Suicide Rate and GDP in US

8. No Period Found!

9. UK SUICIDE RATE TREND Slope Confidence Interval Least Squares
-1.78*10-17
[-2.4*10-17, -1.3*10-17]
Bootstrap
-1.8*10-17

10. Histogram of the least-squares regression slope generated using the bootstrap method. The red circles represent the corresponding synthetic normal distribution for the same mean and standard deviation.

11. Correlation Coefficient
GDP
SUCIDE RATE 1
SUICIDE RATE
P-VALUE
GDP
SUCIDE RATE 1
1.7*10^-8
SUICIDE RATE
P value is less than 0.05, so there is significant correlation between Suicide Rate and GDP in UK

12. No Period Found!

13. Conclusions
No significant correlation between GDP and suicide rate in US
Suicide rate shows negative trend with increasing in GDP in UK
No cycle found in either GDP or Suicide rate

14. QUESTIONS?

15. reference Wordbank database WHO database Wordbank.org