Table 1

Sociodemographic characteristics of mothers of children with CNVs

Family ethnic background (%)
 European81
 Mixed8
 Unknown11
Highest maternal educational qualification (%)
 Low7
 Middle43
 High31
 Unknown19
Family income (%)
 <£99996
 £10 000–£19 99918
 £20 000–£39 00031
 £40 000–£59 00014
 £60 000+17
 Unknown14