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. 2016 Mar 10;6(3):e010752. doi: 10.1136/bmjopen-2015-010752

Table 2.

Family demographics

Characteristic Group of interest Phase 1
n/N (%)
Phase 2
n/N (%)
p Value
Mother has partner Yes 112/124 (90) 108/112 (97) 0.06
Maternal ethnicity British 109/119 (92) 98/106 (93)
Other white* 2/119 (1.7) 5/106 (4.7) 0.18
Other† 8/119 (6.7) 3/106 (2.8) (2 df)
Units Mean (N, SD) Mean (N, SD) p Value
Maternal age Years 30.7 (120, 5.7) 30.7 (111, 5.9) 0.98
Paternal age Years 33.2 (77, 6.4) 32.5 (101, 6.8) 0.46
Deprivation score IMD units 17.6 (126, 11.7) 16.2 (115, 12.4) 0.36

Maternal ethnicity: *British, Irish and any other white; †Indian, Pakistani, Caribbean, African, any other black and other.