Breastfeeding initiation by year of birth across the NMS and routine data for England.

Note: Women gave birth in 2009 and the NMS was conducted in 2010; women gave birth in 2017 and the NMS was conducted in 2018; weights could not be calculated for the 2010 NMS.</p

P-values for tests of interaction between survey year and each explanatory factor in turn.

P-values for tests of interaction between survey year and each explanatory factor in turn.</p

Characteristics of the women included in the two surveys for the analysis of breastfeeding initiation and EBF.

Characteristics of the women included in the two surveys for the analysis of breastfeeding initiation and EBF.</p

Proportion of women ever breastfed by survey year and other explanatory factors.

Proportion of women ever breastfed by survey year and other explanatory factors.</p

Adjusted RRs for exclusive breastfeeding (EBF) at 6 months in 2018 and 2020 combined.

Adjusted RRs for exclusive breastfeeding (EBF) at 6 months in 2018 and 2020 combined.</p

Adjusted RRs for breastfeeding initiation in 2018 and 2020 combined.

Adjusted RRs for breastfeeding initiation in 2018 and 2020 combined.</p

RRs for the effect of survey year on the outcomes.

RRs for the effect of survey year on the outcomes.</p

Adjusted RRs for exclusive breastfeeding (EBF) at 6 weeks in 2018 and 2020 combined.

Adjusted RRs for exclusive breastfeeding (EBF) at 6 weeks in 2018 and 2020 combined.</p

Adjusted RRs for any breastfeeding at 6 months in 2018 and 2020 combined.

Adjusted RRs for any breastfeeding at 6 months in 2018 and 2020 combined.</p

Adjusted RRs for any breastfeeding at 6 weeks in 2018 and 2020 combined.

Adjusted RRs for any breastfeeding at 6 weeks in 2018 and 2020 combined.</p