Sentences with phrase «studies on breastfeeding duration»

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The influence of fathers» socioeconomic status and paternity leave on breastfeeding duration: a population - based cohort study.

On the evidence side, I know that the evidence primarily comes from observational studies, and there are methodological issues with measuring dose and duration of breastfeeding particularly after the introduction of complementary foods, however the evidence is fairly consistent in showing a reduction in gastrointestinal, respiratory and ear infections (see «Breastfeeding and maternal and infant outcomes in developed countries» http://www.ncbi.nlm.nih.gov/pubmbreastfeeding particularly after the introduction of complementary foods, however the evidence is fairly consistent in showing a reduction in gastrointestinal, respiratory and ear infections (see «Breastfeeding and maternal and infant outcomes in developed countries» http://www.ncbi.nlm.nih.gov/pubmBreastfeeding and maternal and infant outcomes in developed countries» http://www.ncbi.nlm.nih.gov/pubmed/17764214).

In fact, in studies and interviews women tend to rate social support as more important than professional support on the duration of their breastfeeding experience 5.

Our use of observational data reflects the existing literature on lactation and maternal health; apart from a single randomized trial examining the effect of exclusive lactation duration on maternal weight loss, 48 there are no published studies of maternal health outcomes in randomized trials of breastfeeding.

Most studies have revealed protective effects of breastfeeding on common infections in the first 8 to12 months of life.8, 27,29,30 One study, which distinguished between infectious diseases until and from the age of 6 months, revealed results similar to those from our study.24 Although the authors used exclusive breastfeeding for 3 months as the reference group, exclusive breastfeeding for 6 months reduced the risk of gastrointestinal tract infections between the ages of 3 and 6 months but not between the ages of 6 and 12 months.24 We can not explain why breastfeeding duration was only associated with lower risks of lower respiratory tract infection from 7 to 12 months.

We assumed that breastfeeding rates were correlated between pregnancies based on several sources of observational data18, 19 and used data from the Infant Feeding Practices Study II to model breastfeeding duration in a subsequent pregnancy contingent on duration of breastfeeding for the prior birth.19

Of note, our models may underestimate the true maternal costs of suboptimal breastfeeding; we modeled the effects of lactation on only five maternal health conditions despite data linking lactation with other maternal health outcomes.46 In addition, women in our model could not develop type 2 diabetes mellitus, hypertension, or MI before age 35 years, although these conditions are becoming increasingly prevalent among young adults.47 Although some studies have found an association between lactation and rates of postmenopausal diabetes22, 23 and cardiovascular disease, 10 we conservatively limited the duration of lactation's effect on both diabetes and MI.

Although not directly comparable, our findings are in broad agreement with those from routine data in Scotland that have indicated a positive association between Baby Friendly accreditation, but not certification, and breastfeeding at 1 week of age.17 Our findings reinforce those of Coutinho and colleagues who reported that high exclusive breastfeeding rates achieved in Brazilian hospitals implementing staff training with the course content of the Baby Friendly Hospital Initiative were short - lived and not sustained at home unless implemented in combination with post-natal home visits.35 Similarly in Italy, training of staff with an adapted version of the Baby Friendly course content resulted in high breastfeeding rates at discharge, with a rapid decrease in the days after leaving hospital.36 In contrast, a cluster randomized trial in Belarus (PROBIT) found an association between an intervention modelled on the Baby Friendly Initiative with an increased duration of breastfeeding37 an association also reported from an observational study in Germany.38 Mothers in Belarus stay in hospital post-partum for 6 — 7 days, and in Germany for 5 days, with post-natal support likely to be particularly important in countries where mothers stay in the hospital for a shorter time, with early discharge likely to limit the influence of a hospital - based intervention.

A more recent study found that full - time work decreased both initiation and duration of breastfeeding, while part - time work had no effect on either (Fein and Roe, 1998).

Interventions to improve breastfeeding initiation, exclusivity and duration are based on extensive evidence from both observational and intervention studies of short - and long - term health benefits of breastfeeding for both mothers and infants.13 — 15 Nevertheless, to our knowledge none of previous studies has systematically examined whether the increases in breastfeeding resulting from such interventions have equally benefited all socioeconomic groups.

Furthermore, there has been no large - scale study of the impact of this intervention on breastfeeding initiation and duration, although a study based in Scotland has provided some evidence for an association between birth in a Baby Friendly facility and increased rates of breastfeeding at 1 week of age.16, 17

Several studies have also attempted to understand the role of breastfeeding on IQ, and although some authors conclude that the observed advantage of breastfeeding on IQ is related only to genetic and socioenvironmental factors, a recent meta - analysis showed that after adjustment for appropriate key co-factors, breastfeeding was associated with significantly higher scores for cognitive development than formula feeding.6 Longer duration of breastfeeding has also been positively associated with intelligence in adulthood.22 We also observed the benefits of long - term breastfeeding on mental indices, along with the indirect benefit of balancing the impact of exposure to p, p ′ DDE after adjustment for some socioeconomic variables.

Studies designed to test the effectiveness of intervention in the extension of breastfeeding to six months have concluded that prenatal education on breastfeeding is not enough to extend the duration, and that intervention during both prenatal and postnatal periods might be more effective [16].

A systematic review of current scientific evidence on the optimal duration of exclusive breastfeeding identified and summarized studies comparing exclusive breastfeeding for 4 to 6 months, versus 6 months.

Conversely, many researchers have observed a greater risk of overweight in children and adolescents who had not been breastfed compared with those who had16, 17 or who were breastfed a shorter rather than longer duration.18 — 25 On the basis of a review of 11 studies, Dewey26 concluded that «the evidence to date suggests that breastfeeding reduces the risk of child overweight to a moderate extent.»

Moreover, data for exposures in almost all studies were based only on maternal recall, sometimes some years after the exposures, although studies have shown that mothers remember breastfeeding durations many years after breastfeeding has stopped.55 - 57 Furthermore, research shows that mothers of sick children sometimes remember early exposures of their children in greater detail compared with mothers of healthy children, especially when the exposures are publicly perceived to be associated with the outcome studied.

Breastfeeding may benefit child cognitive development, but few studies have quantified breastfeeding duration or exclusivity, nor has any study to date examined the role of maternal diet during lactation on chiBreastfeeding may benefit child cognitive development, but few studies have quantified breastfeeding duration or exclusivity, nor has any study to date examined the role of maternal diet during lactation on chibreastfeeding duration or exclusivity, nor has any study to date examined the role of maternal diet during lactation on child cognition.

Studies had to be case control for the purpose of the statistical analysis; have breastfeeding as a measured exposure and leukemia as a measured outcome; include data on breastfeeding duration in months, including but not limited to, 6 months or more (where relevant data were unavailable in the publication, the authors of the studies were contacted); and been published in peer - reviewed journals with full text available in EStudies had to be case control for the purpose of the statistical analysis; have breastfeeding as a measured exposure and leukemia as a measured outcome; include data on breastfeeding duration in months, including but not limited to, 6 months or more (where relevant data were unavailable in the publication, the authors of the studies were contacted); and been published in peer - reviewed journals with full text available in Estudies were contacted); and been published in peer - reviewed journals with full text available in English.

Study Selection To be included in the meta - analyses, studies had to be case control; include breastfeeding as a measured exposure and leukemia as a measured outcome; include data on breastfeeding duration in months; and be published in a peer - reviewed journal with full text available in English.

To be included in the meta - analyses, studies had to be case control; include breastfeeding as a measured exposure and leukemia as a measured outcome; include data on breastfeeding duration in months; and be published in a peer - reviewed journal with full text available in English.

Breastfeeding terms and definitions used in this study are modifications of those recommended by The Interagency Group for Action on Breastfeeding.21 Breastfeeding duration is defined by the following categories 1) full and 2) overall.

Although professional lactation support can improve the duration of overall breast feeding, its effect in improving exclusive breast feeding is unclear.11 18 22 Thus far, studies that report improvement of rates of exclusive breastfeeding have involved mainly community based peer counselling strategies.23 24 25 Even then, a randomised trial in the UK recently cast doubt on the efficacy of this approach.26 There are current recommendations from NICE for the UK - wide implementation of the baby friendly initiative.4 5 6 The 2006 NICE costing report on routine postnatal care of women and their babies estimates that efforts to improve rates of breast feeding will result in substantial cost savings for the NHS.6

Some barriers include the negative attitudes of women and their partners and family members, as well as health care professionals, toward breastfeeding, whereas the main reasons that women do not start or give up breastfeeding are reported to be poor family and social support, perceived milk insufficiency, breast problems, maternal or infant illness, and return to outside employment.2 Several strategies have been used to promote breastfeeding, such as setting standards for maternity services3, 4 (eg, the joint World Health Organization — United Nations Children's Fund [WHO - UNICEF] Baby Friendly Initiative), public education through media campaigns, and health professionals and peer - led initiatives to support individual mothers.5 — 9 Support from the infant's father through active participation in the breastfeeding decision, together with a positive attitude and knowledge about the benefits of breastfeeding, has been shown to have a strong influence on the initiation and duration of breastfeeding in observational studies, 2,10 but scientific evidence is not available as to whether training fathers to manage the most common lactation difficulties can enhance breastfeeding rates.

In addition, there was no effect on breastfeeding duration when the pacifier was introduced at 1 month of age.280 A more recent systematic review found that the highest level of evidence (ie, from clinical trials) does not support an adverse relationship between pacifier use and breastfeeding duration or exclusivity.281 The association between shortened duration of breastfeeding and pacifier use in observational studies likely reflects a number of complex factors such as breastfeeding difficulties or intent to wean.281 A large multicenter, randomized controlled trial of 1021 mothers who were highly motivated to breastfeed were assigned to 2 groups: mothers advised to offer a pacifier after 15 days and mothers advised not to offer a pacifier.

Seven of these studies provided adjusted ORs, and on the basis of these studies, the pooled adjusted OR remained statistically significant at 0.55 (95 % CI: 0.44 — 0.69)(Fig 9).245 The protective effect of breastfeeding increased with exclusivity, with a univariable summary OR of 0.27 (95 % CI: 0.24 — 0.31) for exclusive breastfeeding of any duration.245

Although some SIDS experts and policy - makers endorse pacifier use recommendations that are similar to those of the AAP, 272,273 concerns about possible deleterious effects of pacifier use have prevented others from making a recommendation for pacifier use as a risk reduction strategy.274 Although several observational studies275, — , 277 have found a correlation between pacifiers and reduced breastfeeding duration, the results of well - designed randomized clinical trials indicated that pacifiers do not seem to cause shortened breastfeeding duration for term and preterm infants.278, 279 The authors of 1 study reported a small deleterious effect of early pacifier introduction (2 — 5 days after birth) on exclusive breastfeeding at 1 month of age and on overall breastfeeding duration (defined as any breastfeeding), but early pacifier use did not adversely affect exclusive breastfeeding duration.

Agreement between breastfeeding duration reported prospectively in a diary in 1940 — 1956 by Menstruation and Reproductive History Study participants and retrospectively on a questionnaire in 1990 — 1991, according to maternal and infant characteristics, United States

Studies in this category demonstrated a significant effect on duration of any breastfeeding, especially in the first two months.

Three publications were excluded: one study examined only the association between duration of breastfeeding and fasting plasma lipids at 17 y of age, and there was no formula - fed group for comparison (21); one examined the effect of nutritional supplementation in pregnant mothers, infants, and children on serum lipids in later life (18); and one was a review (22).