Table 1.

Sociodemographic characteristics of mothers of children with CNVs

Family ethnic background (%)
European	81
Mixed	8
Unknown	11
Highest maternal educational qualification (%)
Low	7
Middle	43
High	31
Unknown	19
Family income (%)
<£9999	6
£10 000–£19 999	18
£20 000–£39 000	31
£40 000–£59 000	14
£60 000+	17
Unknown	14