Table 4 personal and socio-economic factors of the study mothers tested versus CTVB of home address (n.1360).

Mother's social class by RG classification

I, II, IIINM, IIIM, IV, V

95.30

1

< 0.001

Mother's weekly family income at recruitment

< £100, £100–199, £200–299, £300–399, >£400

128.6

1

< 0.001

Money from DSS for baby equipment

Yes or no

30.3

1

< 0.001

Mother's highest educational attainment

CSE, Vocational, O-level, A-level, Degree

136.0

1

< 0.001

Partner's highest educational attainment

CSE, Vocational, O-level, A-level, Degree

101.9

1

< 0.001

Mother's accommodation status

Owned, mortgaged, council-rented, housing association rented, privately rented (furnished), privately rented (unfurnished), other

73.7

1

<0.001

Number living rooms in mother's accommodation

0 – 10 inclusive

126.0

1

< 0.001

Mould or damp in mother's accommodation

Yes or no

10.0

1

0.002

Mother smoking cigarettes in pregnancy

Yes or no

73.6

1

< 0.001

Mother smoking cigarettes since birth of child

Yes or no

75.0

1

< 0.001