Table 1.

Characteristics of women involved and not involved in the survey

	Women involved n (%), N = 7188	Women not involved n (%), N = 9240
Age at delivery
< 25 years	564 (7.9)	874 (9.5)
25–34 years	4177 (58.1)	5114 (55.3)
≥ 35 years	2447 (34.0)	3252 (35.2)
Level of education
None/completed primary school	64 (0.9)	185 (2.0)
Completed secondary school	1101 (15.3)	1473 (15.9)
Completed high school or equivalent	3381 (47.0)	4360 (47.2)
Bachelor degree or higher	2642 (36.8)	3222 (34.9)
Born in Italy
Yes	5705 (79.4)	6477 (70.1)
Employed
Yes	4733 (65.8)	5470 (59.2)
Parity
Nulliparous	3705 (51.5)	4629 (50.1)
Smoking during the five years before pregnancy
Yes	1709 (23.8)	2218 (24.0)
Medical service mainly used during pregnancy
Public Local Family Health Unit	1151(16.0)	1578 (17.1)
Public hospital services	2605 (36.2)	3180 (34.4)
Private gynaecologist/obstetrician	2807 (39.1)	3721 (40.3)
Private Local Family Health Unit	68 (1.0)	181 (2.0)
None	3 (0.0)	22 (0.2)