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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 Studentsf Lives

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data10
Regression equation
Y = 3.352022 X +3.720
Correlation coefficient (r)0.715
Coefficient of determination (R2)0.511

GDP per capita (current US$)
No. of data10
Regression equation
Y = 101466.191051 X -39903.050
Correlation coefficient (r)0.621
Coefficient of determination (R2)0.386

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -10.847172 X +91.497
Correlation coefficient (r)-0.416
Coefficient of determination (R2)0.173

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = 1.550587 X +0.121
Correlation coefficient (r)0.461
Coefficient of determination (R2)0.213

Suicide, age-standardized (per 100 000 population)
No. of data10
Regression equation
Y = -1.671325 X +12.563
Correlation coefficient (r)-0.032
Coefficient of determination (R2)0.001