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Question: How much do you agree with the following statements? - I usually manage one way or another.
Choices: "Strongly disagree" "Disagree" "Agree" "Strongly agree"
Data: % of "Strongly agree" "Agree"
Period:
Area:
10 countries/ areas
Highlight:
1 United States93.6%
2 Australia93.3%
3 Canada93.1%
3 Sweden93.1%
5 France 92.4%
6 United Kingdom90.2%
7 Republic of Korea85.6%
8 Germany84.8%
9 Italy84.6%
10 Japan64.8%

Source
PISA 2018 Results (Volume III) : What School Life Means for Studentsf Lives

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data10
Regression equation
Y = 4.213962 X +3.088
Correlation coefficient (r)0.700
Coefficient of determination (R2)0.490

GNI per capita, Atlas method (current US$)
No. of data10
Regression equation
Y = 47170.113447 X +4194.566
Correlation coefficient (r)0.408
Coefficient of determination (R2)0.166

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -9.335974 X +90.394
Correlation coefficient (r)-0.522
Coefficient of determination (R2)0.272

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = 1.444216 X +0.303
Correlation coefficient (r)0.465
Coefficient of determination (R2)0.216

Suicide - all ages (per 100,000 population)
No. of data10
Regression equation
Y = -7.608175 X +20.631
Correlation coefficient (r)-0.112
Coefficient of determination (R2)0.013