TABLE 3.

Proportion of children spending at least 2 h per day on school-related activities at home, according to the highest educational attainment of the parents living in the household (95% confidence intervals in parentheses).

Time point	High education	Medium education	Low education
In 2019	0.08 (0.05,0.11)	0.10 (0.06,0,14)	0.02 (0.00,0,04)
During 2020 spring lockdown	0.70 (0.61,0.81)	0.66 (0.56,0.75)	0.69 (0.51,0.95)
After 2020 spring lockdown	0.49 (0.29,0.67)	0.53 (0.35,0.69)	0.04 (0.00,0.08)

Weighted analysis. Confidence intervals (given in parentheses) have been derived by basic bootstrap.