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Does early introduction of solid feeding lead to early cessation of breastfeeding? A secondary analysis of three cohort studies

Does early introduction of solid feeding lead to early cessation of breastfeeding? A secondary analysis of three cohort studies
Does early introduction of solid feeding lead to early cessation of breastfeeding? A secondary analysis of three cohort studies
Mixed milk feeding increases the likelihood of breastfeeding cessation, but it is not known if solid feeding (SF) has the same effect. We have identified 10,407 infants breastfed for at least 8–10 weeks from three large U.K. studies (Avon Longitudinal Study of Parents and Children [ALSPAC; born 1990–1991], Southampton Woman's Survey [SWS; 1998–2008], and Infant Feeding Survey 2010 [IFS 2010]) to investigate the associations between early SF and breastfeeding cessation. In the earliest study (ALSPAC), 67% had started SF before the age of 4 months, but in the latest (IFS), only 23% had started before 4 months. Solid food introduction before 4 months was associated with stopping breastfeeding before 6 months in all three cohorts, with little effect of adjustment for maternal sociodemographic characteristics (Poisson regression, adjusted prevalence ratios: ALSPAC 1.55, [95% confidence interval 1.4, 1.8], SWS 1.13 [1.0, 1.3], IFS 1.10 [1.1, 1.3]). Using Cox regression, adjusted hazard ratios for breastfeeding cessation compared with SF after 5 months were 2.07 (1.8, 2.4) for SF before 4 and 1.51 (1.3, 1.8) at 4–5 months for ALSPAC and 1.25 (1.1, 1.5) and 1.15 (1.0, 1.3) for SWS. Earlier introduction of solids was associated with a shorter duration of breastfeeding, particularly in cohorts where earlier introduction of solids was the norm, with a dose–response relationship, which was not explained by background social characteristics. As mothers most commonly introduced solids in the month prior to the then recommended age, continuing to recommend deferring solids to the age of 6 months is important to support sustained breastfeeding.
1740-8695
Lessa, Angelina
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Garcia, Ada
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Emmett, Pauline
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Crozier, Sarah
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Robinson, Sian M
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Godfrey, Keith
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Wright, Charlotte M.
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Lessa, Angelina
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Garcia, Ada
a9142efc-e2ff-4c10-bcbd-d5d7b12cc1c4
Emmett, Pauline
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Crozier, Sarah
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Robinson, Sian M
ba591c98-4380-456a-be8a-c452f992b69b
Godfrey, Keith
0931701e-fe2c-44b5-8f0d-ec5c7477a6fd
Wright, Charlotte M.
de197a0b-9db2-40e1-91dc-8d2d3e1606b9

Lessa, Angelina, Garcia, Ada, Emmett, Pauline, Crozier, Sarah, Robinson, Sian M, Godfrey, Keith and Wright, Charlotte M. (2020) Does early introduction of solid feeding lead to early cessation of breastfeeding? A secondary analysis of three cohort studies. Maternal & Child Nutrition, [e12944]. (doi:10.1111/mcn.12944).

Record type: Article

Abstract

Mixed milk feeding increases the likelihood of breastfeeding cessation, but it is not known if solid feeding (SF) has the same effect. We have identified 10,407 infants breastfed for at least 8–10 weeks from three large U.K. studies (Avon Longitudinal Study of Parents and Children [ALSPAC; born 1990–1991], Southampton Woman's Survey [SWS; 1998–2008], and Infant Feeding Survey 2010 [IFS 2010]) to investigate the associations between early SF and breastfeeding cessation. In the earliest study (ALSPAC), 67% had started SF before the age of 4 months, but in the latest (IFS), only 23% had started before 4 months. Solid food introduction before 4 months was associated with stopping breastfeeding before 6 months in all three cohorts, with little effect of adjustment for maternal sociodemographic characteristics (Poisson regression, adjusted prevalence ratios: ALSPAC 1.55, [95% confidence interval 1.4, 1.8], SWS 1.13 [1.0, 1.3], IFS 1.10 [1.1, 1.3]). Using Cox regression, adjusted hazard ratios for breastfeeding cessation compared with SF after 5 months were 2.07 (1.8, 2.4) for SF before 4 and 1.51 (1.3, 1.8) at 4–5 months for ALSPAC and 1.25 (1.1, 1.5) and 1.15 (1.0, 1.3) for SWS. Earlier introduction of solids was associated with a shorter duration of breastfeeding, particularly in cohorts where earlier introduction of solids was the norm, with a dose–response relationship, which was not explained by background social characteristics. As mothers most commonly introduced solids in the month prior to the then recommended age, continuing to recommend deferring solids to the age of 6 months is important to support sustained breastfeeding.

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Accepted/In Press date: 15 December 2019
e-pub ahead of print date: 29 January 2020

Identifiers

Local EPrints ID: 436714
URI: http://eprints.soton.ac.uk/id/eprint/436714
ISSN: 1740-8695
PURE UUID: 110128a8-3ad2-474d-8275-32cb776f62e6
ORCID for Sarah Crozier: ORCID iD orcid.org/0000-0002-9524-1127
ORCID for Sian M Robinson: ORCID iD orcid.org/0000-0003-1766-7269
ORCID for Keith Godfrey: ORCID iD orcid.org/0000-0002-4643-0618

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Date deposited: 03 Jan 2020 11:02
Last modified: 26 Nov 2021 05:16

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Contributors

Author: Angelina Lessa
Author: Ada Garcia
Author: Pauline Emmett
Author: Sarah Crozier ORCID iD
Author: Sian M Robinson ORCID iD
Author: Keith Godfrey ORCID iD
Author: Charlotte M. Wright

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