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Question: Thinking about yourself and how you normally feel: how often do you feel as described below? - Sad
Choices: "Never" "Rarely" "Sometimes" "Always"
Data: % of "Sometimes" "Always"
Period:
Area:
9 countries/ areas
Highlight:
1 Japan65.6%
2 United States63.3%
3 United Kingdom59.9%
4 Canada56.4%
5 Italy55.3%
8 France 45.8%
9 Germany43.2%

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 data7
Regression equation
Y = -1.175099 X +7.238
Correlation coefficient (r)-0.341
Coefficient of determination (R2)0.116

GDP per capita (current US$)
No. of data7
Regression equation
Y = 20837.836215 X +39139.375
Correlation coefficient (r)0.114
Coefficient of determination (R2)0.013

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -0.353560 X +81.711
Correlation coefficient (r)-0.014
Coefficient of determination (R2)0.000

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = -0.743943 X +1.888
Correlation coefficient (r)-0.297
Coefficient of determination (R2)0.088

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = 16.513769 X +0.271
Correlation coefficient (r)0.413
Coefficient of determination (R2)0.171