At 12 months infants born to a mother with a tertiary education (adjusted OR¼2.35, 95% CI 1.20–4.62) and infants who had left the maternity hospital exclusively breast feeding (adjusted OR¼2.03, 95% CI 1.12–3.67) had twice the odds of being breast fed compared to infants born to mothers with no tertiary education and those that had received infant artificial milk supplementation in the maternity hospital, respectively