Interviews - mothers/partners/other family members.

N/A = not applicable; N/R = not recorded.1T relates to a telephone interview; no letter refers to a face to face interview.2Mother/father relates to those who have older children (who may/may not be currently pregnant); mother* relates to women who have older children and who are pregnant; Woman/man relates to those who are pregnant/expecting first child.31 - Participant married/living together/in a relationship; 2– Single/divorced.41 - White; 2 - Black or Minority Ethnic classifications (BME).51- Degree level qualification; 2 - A level or equivalent; 3 - GCSE/NVQ or equivalent; 4 - No formal qualifications; 5- Not recorded.61 – Never smoked; 2 – Quit during pregnancy; 3 – Cut down during pregnancy; 4 – Quit prior to pregnancy; 5 – Currently smoking.7Code relates to women who are currently pregnant: 1 – Plan to breastfed; 2 – Plan to mixed feed; 3 – Plan to formula feed.8Code relates to families with older children/interviewed in post-natal period: 1 – Previous experience of breastfeeding; 2 – Never breastfed.9SC – experience of smoking cessation incentive intervention; BF – experience of breastfeeding incentive intervention; ‘Other’ relates to those involved in Barnardo’s Early Years Early Action Fund; http://www.barnardos.org.uk/media_centre/press_releases.htm?ref=81644).10Mothers participated in an ante-natal and post-natal interview.Interviews - mothers/partners/other family members.