Table 4 Response rates to pilot surveys 1 and 2 by maternal sociodemographic characteristics
Pilot 1 (N = 287) | Pilot 2 (N = 662) | % difference | 95% CI for % difference | |||
|---|---|---|---|---|---|---|
n^ | %+ | n^ | %+ | |||
Age (years) | ||||||
16–24 | 28 | 18.4 | 57 | 18.0 | −0.4 | − 6.7, 8.3 |
25–29 | 69 | 25.7 | 159 | 28.4 | +2.7 | −3.9, 8.9 |
30–34 | 95 | 28.3 | 252 | 39.5 | +11.2 | 4.9, 17.2 |
> = 35 | 95 | 38.9 | 194 | 44.1 | +5.2 | −2.5, 12.7 |
Marital status | ||||||
Married | 175 | 33.4 | 452 | 42.3 | +8.9 | 3.8, 13.8 |
Joint registration (same address) | 90 | 26.7 | 166 | 27.3 | +0.6 | −5.4, 6.4 |
Joint registration (different address) | 15 | 15.5 | 32 | 17.1 | +1.6 | −8.1, 10.0 |
Sole registration | 7 | 16.7 | 12 | 13.2 | −3.5 | −8.4, 18.5 |
Country of birth | ||||||
UK | 228 | 32.2 | 500 | 36.7 | +4.5 | 0.2, 8.7 |
Not UK | 59 | 20.3 | 162 | 27.5 | +7.2 | 1.1, 12.8 |
Index of multiple deprivation (IMD) | ||||||
1st (most deprived) | 40 | 16.0 | 104 | 21.1 | +5.1 | −1.0, 10.6 |
2nd | 59 | 24.6 | 130 | 29.2 | +4.6 | −2.5, 11.3 |
3rd | 66 | 31.6 | 125 | 34.0 | +2.4 | −5.7, 10.1 |
4th | 61 | 40.4 | 147 | 43.6 | +3.2 | −6.3, 12.4 |
5th (least deprived) | 61 | 40.7 | 156 | 50.3 | +9.6 | −0.1, 18.9 |
Region | ||||||
North East | 17 | 34.7 | 27 | 32.5 | −2.2 | −13.7, 18.9 |
North West | 35 | 25.4 | 85 | 32.1 | +6.7 | −2.8, 15.5 |
Yorkshire & the Humber | 23 | 21.9 | 65 | 32.5 | +10.6 | −0.1, 20.2 |
East Midlands | 22 | 25.9 | 48 | 30.0 | +4.1 | −8.0, 15.2 |
West Midlands | 29 | 27.1 | 74 | 34.4 | +7.3 | −3.6, 17.3 |
East of England | 39 | 34.5 | 83 | 37.2 | +2.7 | −8.3, 13.1 |
London | 51 | 25.8 | 104 | 28.3 | +2.5 | −5.3, 9.9 |
South East | 51 | 36.2 | 122 | 40.4 | +4.2 | −5.6, 13.5 |
South West | 20 | 31.3 | 54 | 39.1 | +7.8 | −6.6, 20.8 |