Table 2.

General characteristics of parents and families at the interview

Sociodemographic variables		Cases	%	IC 95%
Mother educational level
	None	19	0.4%	0.25–0.66
	Primary school (6 to 11 years)	22	0.5%	0.31–0.74
	Secondary school (from 11 to 14 years)	541	12.0%	11.09–13.01
	High school (from 14 to 19 years)	2,110	46.9%	45.44–48.38
	Degree	1,430	31.8%	30.43–33.18
	Master/Doctorate/Specialisation	376	8.4%	7.57–9.21
Mother nationality
	Italian	4,066	90.0%	89.12–90.89
	Foreign	441	9.8%	8.91–10.67
Mother not present		9	0.2%	0.09–0.38
Father educational level
	None	22	0.5%	0.31–0.75
	Primary school (6 to 11 years)	52	1.2%	0.88–1.53
	Secondary school (from 11 to 14 years)	986	22.2%	20.98–23.45
	High school (from 14 to 19 years)	2,238	50.4%	48.90-51.86
	Degree	931	21.0%	19.77–22.19
	Master/Doctorate/Specialisation	213	4.8%	4.19–5.47
Father nationality
	Italian	4,122	91.5%	90.65–92.30
	Foreign	331	7.3%	6.60-8-15
Father not present		52	1.1%	0.09–1.51
Family-perceived wealth
	Very easy/quite easy	2,027	50.6%	49.0-52.2
	Slightly hard/very hard	1,655	41.3%	39.8–42.9
	Don’t know	324	8.1%	7.3-9.0
Availability of home outdoor spaces
	Large habitable spaces	3,287	70.5%	69.2–71.8
	Small non-habitable spaces	1,005	21.5%	20.4–22.8
	No outdoor spaces	371	8.0%	7.2–8.8
House size
	> 150 m2	670	14.7%	13.6–15.7
	91–150 m2	2,240	48.9%	47.5–50.4
	<=90 m2	1,668	36.4%	35.0-37.8