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Question: How much do you agree with the following statements about yourself? - Once I start a task, I persist until it is finished.
Choices: "Strongly disagree" "Disagree" "Agree" "Strongly agree"
Data: % of "Agree" "Strongly agree"
Period:
Area:
10 countries/ areas
Highlight:
1 Italy76.3%
3 United States71.8%
4 France68.5%
5 Canada67.8%
7 Japan65.2%
9 Germany62.7%
10 United Kingdom62.3%

Note
The data of Azerbaijan are collected only in Baku. The data of China are collected only in Beijing, Shanghai, Jiangsu, and Zhejiang.

Source
OECD PISA 2018 Compendia

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data7
Regression equation
Y = -1.227003 X +7.416
Correlation coefficient (r)-0.212
Coefficient of determination (R2)0.045

GDP per capita (current US$)
No. of data7
Regression equation
Y = 37988.863996 X +24977.693
Correlation coefficient (r)0.124
Coefficient of determination (R2)0.015

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -6.411439 X +85.861
Correlation coefficient (r)-0.153
Coefficient of determination (R2)0.023

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = -0.582499 X +1.869
Correlation coefficient (r)-0.138
Coefficient of determination (R2)0.019

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = -6.748155 X +14.035
Correlation coefficient (r)-0.100
Coefficient of determination (R2)0.010