1.

Summary table of sociodemographic characteristics for Belgian and French participants.

2.

Summary table of sociodemographic characteristics for Belgian and French participants.

3.

Summary table of sociodemographic characteristics for Belgian and French participants.

1.

Correlation matrix with Belgian above and French below, means and standard deviations for handwashing.

2.

Correlation matrix with Belgian above and French below, means and standard deviations for handwashing.

3.

Correlation matrix with Belgian above and French below, means and standard deviations for handwashing.

1.

Correlation matrix with Belgian above and French below, means and standard deviations for limitation of social contacts.

2.

Correlation matrix with Belgian above and French below, means and standard deviations for limitation of social contacts.

3.

Correlation matrix with Belgian above and French below, means and standard deviations for limitation of social contacts.

1.

Daily new confirmed COVID-19 cases per million people in Belgium and France.

2.

Daily new confirmed COVID-19 cases per million people in Belgium and France.

3.

Daily new confirmed COVID-19 cases per million people in Belgium and France.

1.

Daily new confirmed COVID-19 deaths per million people in Belgium and France.

2.

Daily new confirmed COVID-19 deaths per million people in Belgium and France.

3.

Daily new confirmed COVID-19 deaths per million people in Belgium and France.

1.

COVID-19 government response stringency on lockdown in Belgium and France.

2.

COVID-19 government response stringency on lockdown in Belgium and France.

3.

COVID-19 government response stringency on lockdown in Belgium and France.