Development of a nonlinear hierarchical model to describe the disposition of deuterium in mother-infant pairs to assess exclusive breastfeeding practice.
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ABSTRACT:
SUBMITTER: Liu Z
PROVIDER: S-EPMC6394541 | biostudies-literature | 2019 Feb
REPOSITORIES: biostudies-literature
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Development of a nonlinear hierarchical model to describe the disposition of deuterium in mother-infant pairs to assess exclusive breastfeeding practice.
Liu Zheng Z Diana Aly A Slater Christine C Preston Thomas T Gibson Rosalind S RS Houghton Lisa L Duffull Stephen B SB
Journal of pharmacokinetics and pharmacodynamics 20181114 1
The World Health Organization recommends exclusive breastfeeding (EBF) for the first 6 months after birth. The deuterium oxide dose-to-the-mother (DTM) technique is used to distinguish EBF based on a cut-off (< 25 g/day) of water intake from sources other than breastmilk. This value is based on a theoretical threshold and has not been verified in field studies. The aim of this study was to estimate the water intake cut-off value that can be used to define EBF practice. One hundred and twenty-one ...[more]
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Project description:BackgroundIncreasing the prevalence of optimal breastfeeding practices, including exclusive breastfeeding for 6 months, could prevent an estimated 823,000 child deaths annually. Self-efficacy is an important determinant of breastfeeding behaviors. However, existing measures do not specifically assess exclusive breastfeeding self-efficacy, but rather self-efficacy for any breastfeeding. Hence, we sought to adapt and validate an instrument to measure exclusive breastfeeding self-efficacy.MethodsWe modified and added items from Dennis' Breastfeeding Self-Efficacy Scale-Short Form (BSES-SF). It was then implemented in an observational cohort in Gulu, Uganda at 1 (n = 239) and 3 (n = 238) months postpartum ( clinicaltrials.gov NCT02925429). We performed inter-item and adjusted item-test correlations, as well as exploratory factor analysis and parallel analysis at 1 month postpartum to remove redundant items and determine their latent factor structure. We further applied confirmatory factor analysis to test dimensionality of the scale at 3 months postpartum. We then assessed the reliability of the scale and conducted tests of predictive and discriminant validity. Known group comparisons were made by primiparous status and correct breastfeeding knowledge.ResultsThe modification of the original BSES-SF to target exclusive breastfeeding produced 19 items, which were reduced to 9 based on item correlations and factor loadings. Two dimensions of the adapted scale, the Breastfeeding Self-Efficacy Scale to Measure Exclusive Breastfeeding BSES-EBF emerged: Cognitive and Functional subscales, with alpha coefficients of 0.85 and 0.79 at 3 months postpartum. Predictive and discriminant validity and known group comparisons assessments supported its validity.ConclusionsThis version of the Breastfeeding Self-Efficacy scale, the BSES-EBF Scale, is valid and reliable for measuring exclusive breastfeeding self-efficacy in northern Uganda, and ready for adaptation and validation for clinical and programmatic use elsewhere.
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Project description:BackgroundThe World Health Organization recommends that mothers should exclusively breastfeed their infants until 6?months of age due to the benefits for the mother and the child. There is documented evidence on exclusive breastfeeding from Ethiopia, but not specifically from Samara-Logia city administration. This study aimed to assess the factors associated with early termination of exclusive breastfeeding among mother-infant dyads in Samara-Logia, Ethiopia.MethodsA cross-sectional study was conducted in March 2018. Data were collected on 484 randomly selected mother-infant dyads. The Kaplan Meier curve with the log-rank test was used to compare the survival difference. Cox regression models were used to identify the predictors of early termination of exclusive breastfeeding.ResultsThe cumulative proportion of survival probability of exclusive breastfeeding to 6?months was 64.5%, with the median duration of 6?months. Mothers having partners with formal education [Adjusted hazard ratio (AHR): 0.58; 95% confidence interval (CI): 0.39, 0.85], receiving counseling on exclusive breastfeeding at antenatal check-up [AHR: 0.62; 95% CI: 0.43, 0.91], giving birth in a health institution [AHR: 0.50; 95% CI: 0.28, 0.88], initiating breastfeeding within the first hour [AHR: 0.41; 95% CI: 0.24, 0.68], and perceiving breast milk adequate for the first 6?months [AHR: 0.17; 95% CI: 0.12, 0.25] were associated with lower hazard of discontinuing exclusive breastfeeding before 6?months.ConclusionThis study showed that the cumulative proportion of survival probability on exclusive breastfeeding was low in Samara-Logia city administration. Educating husbands to support their partners, strengthening infant feeding counseling, promoting institutional delivery, educating women about the benefit of early initiation of breastfeeding, and expanding urban health extension program are important to improve the duration of exclusive breastfeeding in Ethiopia.
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Project description:ObjectiveTo identify modifiable risk factors associated with early initiation of breastfeeding (EIBF) and exclusive breastfeeding (EBF) in Colombia.DesignCross-sectional study from the 2010 Colombia nationally representative Demographic Health Survey (DHS). Studied exposures were categorized into five hierarchical blocks of increasing proximity to the outcomes: household, maternal, health systems, child, and early feeding characteristics. The two outcomes examined were delayed breastfeeding initiation among infants <24 months and interruption of EBF among infants <6 months. Prevalence ratios were computed using Poisson regression analysis with robust error variance, adjusted for sampling weights, following a hierarchical modelling approach.SettingNationally representative cross-sectional survey from Colombia.ParticipantsThe EIBF analytical sample included 6592 and the EBF sample 1512 women with young children.ResultsEIBF prevalence was 65·6 % in children under 24 months and EBF was 43 % in infants under 6 months. Modifiable risk factors associated with delayed breastfeeding initiation were: C-section (PR = 2·08, CI 95 % = 1·92, 2·25), maternal overweight/obesity (PR = 1·09, CI 95 % = 1·01, 1·17), lack of skilled attendant at birth (PR = 1·09, CI 95 % = 1·01, 1·18). Modifiable risk factors for EBF interruption were C-section (PR = 1·12, CI 95 % = 1·02, 1·23) and prelacteal feeding (PR = 1·51, CI 95 % = 1·37, 1·68). Non-pregnancy intention was a protective factor for EBF interruption (PR = 0·82, CI 95 % = 0·72, 0·93).ConclusionsC-section, lack of skilled attendant at birth, prelacteal feeding, maternal nutritional status, and pregnancy intention were modifiable factors associated with suboptimal breastfeeding practices in Colombia.
| S-EPMC10200481 | biostudies-literature
Project description:Overweight and obese mothers in the United States have disproportionately lower rates of exclusive breastfeeding than mothers of normal weight. The Ten Steps to Successful Breastfeeding (Ten Steps), a series of evidence-based practices designed to support breastfeeding initiation, duration, and exclusivity, demonstrate effectiveness at the population level. It is unknown, however, whether they are consistently provided to women across all maternal body mass index (BMI) categories. We sought to determine whether pre-pregnancy BMI is associated with the implementation and effectiveness of the Ten Steps. We used data from Listening to Mothers III, a cross-sectional survey administered to a sample of mothers who delivered in U.S. hospitals between July 2011 and June 2012. Measures of the Ten Steps were based on maternal self-report on Listening to Mothers III. Our analytic sample was limited to mothers of term infants intending to breastfeed (N = 1,506, weighted). We conducted chi-square testing and constructed weighted multivariable logistic regression models to account for potential confounders. Results suggest that two practices (i.e., holding their babies skin-to-skin for the first time and being encouraged to breastfeed on demand) were more strongly associated with exclusive breastfeeding among mothers with obesity than other mothers. Additionally, mothers with obesity reported holding babies skin-to-skin significantly less often than other mothers. Thus, interventions aimed at helping mothers with obesity to hold their babies skin-to-skin in the first hour and teaching them to breastfeed on demand have the potential to decrease the breastfeeding disparities in this population.
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Project description:Breastfeeding promotion and support in hospitals is expected to have a positive impact on maternal breastfeeding outcomes. The objective of this study is to examine the association between breastfeeding promotion in maternity hospitals in Germany and exclusive breastfeeding (EBF) rates during the first 4 months. Thus, a nationwide cross-sectional web-based survey of breastfeeding promotion was conducted in 103 hospitals. Mother-infant pairs (n = 962) were recruited at these hospitals for a prospective web-based survey of breastfeeding status at five-time points, that is, during a hospital stay, at discharge as well as after 0.5, 2, and 4 months. The hospital analysis was based on the "10 Steps to Successful Breastfeeding" of the World Health Organization and the United Nations Children's Fund, adapted for Germany. Their degree of implementation was stratified by a breastfeeding promotion index (BPI) as low (≤5 steps), medium (6-8 steps), and high (≥9 steps). The association between the BPI and the odds of EBF at each of the five-time points was estimated by multivariable regression models, adjusting for various maternal factors. At all time points, the proportion of EBF among mothers from high BPI hospitals exceeded the proportion of those from medium or low BPI hospitals. A high BPI was associated with higher odds of EBF during the hospital stay and at discharge, while maternal factors for EBF such as breastfeeding experience and no early use of a pacifier persisted beyond. The high commitment of hospitals and tailored support of mothers is essential for EBF.
| S-EPMC8932702 | biostudies-literature
Project description:OBJECTIVE:to analyze the relationship between maternal self-efficacy to breastfeed and sociodemographic, obstetric, and neonatal variables; between the duration of exclusive breastfeeding and sociodemographic variables; and between the breastfeeding self-efficacy and the duration of exclusive breastfeeding at the intervals of 30, 60, and 180 days postpartum. METHOD:a longitudinal and prospective study conducted with 224 women. A sociodemographic questionnaire, the Breastfeeding Self-Efficacy Scale - Short Form, and a questionnaire on breastfeeding and child feeding were used for collecting the data. Fisher's exact test and Pearson's correlation coefficient test were used for analysis. RESULTS:there was no association between breastfeeding self-efficacy and the duration of exclusive breastfeeding identified at 30, 60, and 180 days. Self-efficacy was associated with the type of delivery and complications in the postpartum period. There was also an association between religion and exclusive breastfeeding 30 and 60 days postpartum, and assistance with baby care and exclusive breastfeeding at 60 days. CONCLUSION:It was identified that the type of delivery, complications in the postpartum period, religion, and assistance with baby care corroborate to increase maternal confidence in the ability to breastfeed.
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Project description:Breastfeeding is associated with infant and maternal health benefits and considerable potential savings to health services. Despite this, only 37% of infants globally are exclusively breastfed for 6 months. Interventions are needed to improve breastfeeding rates. The aim of this study is to determine whether written breastfeeding information in pregnancy and proactive breastfeeding-focused support phone calls, provided by a health professional educated in breastfeeding management, increase exclusive breastfeeding rates at 3 months compared with general birth-related information with proactive support calls or standard care. This is a single-centre, randomised, controlled, three-arm, superiority study with blind outcome assessment. Eligible participants will include primigravidae with singleton pregnancies who speak Croatian, attending six primary care obstetric practices. We estimate a total sample size of 459, with computer generated stratified randomisation of 153 women per arm. Participants in the intervention and active control groups will receive booklets in pregnancy, phone calls 2 weeks later, and 2, 6 and 10 weeks after birth. The primary outcome will be the proportion of women exclusively breastfeeding at 3 months. Secondary outcomes will compare: infant feeding practices and attitudes, social support, breastfeeding difficulties, breastfeeding self efficacy and utilisation of breastfeeding support services. Follow-up at 6 months will compare exclusive and any breastfeeding and utilised support services. Analysis will be by intention to treat. This trial will contribute to future evidence syntheses identifying the most effective forms of breastfeeding support.
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Project description:The World Health Organization (WHO) and United Nations Children's Fund (UNICEF) recommend exclusive breastfeeding (EBF) for the first 6 months of life. To estimate the proportion of infants that are exclusively breastfed, many agencies use the point prevalence of EBF among infants currently 0-5.9 months of age, as recommended by WHO and UNICEF. This measure tends to overestimate the percentage of infants that are exclusively breastfed for the entire recommended period. We compared five methods of measuring EBF, using data from three large-scale cross-sectional surveys. The five methods were: the WHO/UNICEF recommended method (EBF-24H); an estimate of EBF for 6 months, using the 24-h recall among infants 4-5.9 and 6-7.9 months (EBF-24H-Pul); a since birth recall (EBF-SB); an estimate of EBF for 6 months, using the since-birth recall among infants 4-5.9 and 6-7.9 months (EBF-SB-Pul); a retrospective measure of EBF collected from infants 6-11.9 months, based on the age of introduction of liquids and foods (EBF-AI). EBF-24H-Pul and EBF-SB-Pul produced lower estimates of EBF than other measures, while also aligning better with the WHO recommendation, but may be difficult to estimate from multipurpose surveys due to sample size limitations. The EBF-AI method produced estimates between these, aligns well with the WHO recommendation and can be easily collected in large-scale household surveys. Additional validation of the EBF-24-Pul, EBF-SB-Pul, and EBF-AI methods is recommended to understand how accurately they measure EBF for the recommended 6-month period.
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Project description:BackgroundATP-binding cassette (ABC) transporters have been associated with methylmercury (MeHg) toxicity in experimental animal models.AimsTo evaluate the association of single nucleotide polymorphisms (SNPs) in maternal ABC transporter genes with 1) maternal hair MeHg concentrations during pregnancy and 2) child neurodevelopmental outcomes.Materials and methodsNutrition Cohort 2 (NC2) is an observational mother-child cohort recruited in the Republic of Seychelles from 2008-2011. Total mercury (Hg) was measured in maternal hair growing during pregnancy as a biomarker for prenatal MeHg exposure (N=1313) (mean 3.9ppm). Infants completed developmental assessments by Bayley Scales of Infant Development II (BSID-II) at 20months of age (N=1331). Genotyping for fifteen SNPs in ABCC1, ABCC2 and ABCB1 was performed for the mothers.ResultsSeven of fifteen ABC SNPs (ABCC1 rs11075290, rs212093, and rs215088; ABCC2 rs717620; ABCB1 rs10276499, rs1202169, and rs2032582) were associated with concentrations of maternal hair Hg (p<0.001 to 0.013). One SNP (ABCC1 rs11075290) was also significantly associated with neurodevelopment; children born to mothers with rs11075290 CC genotype (mean hair Hg 3.6ppm) scored on average 2 points lower on the Mental Development Index (MDI) and 3 points lower on the Psychomotor Development Index (PDI) than children born to mothers with TT genotype (mean hair Hg 4.7ppm) while children with the CT genotype (mean hair Hg 4.0ppm) had intermediate BSID scores.DiscussionGenetic variation in ABC transporter genes was associated with maternal hair Hg concentrations. The implications for MeHg dose in the developing child and neurodevelopmental outcomes need to be further investigated.
| S-EPMC4980164 | biostudies-literature
Project description:The duration of exclusive breastfeeding (EBF) is often defined as the time from birth to the first non-breast milk food/liquid fed (EBFLONG), or it is estimated by calculating the proportion of women at a given infant age who EBF in the previous 24 h (EBFDHS). Others have measured the total days or personal prevalence of EBF (EBFPREV), recognizing that although non-EBF days may occur, EBF can be re-initiated for extended periods. We compared breastfeeding metrics in the MAL-ED study; infants' breastfeeding trajectories were characterized from enrollment (median 7 days, IQR: 4, 12) to 180 days at eight sites. During twice-weekly surveillance, caretakers were queried about infant feeding the prior day. Overall, 101 833 visits and 356 764 child days of data were collected from 1957 infants. Median duration of EBFLONG was 33 days (95% CI: 32-36), compared to 49 days based on the EBFDHS. Median EBFPREV was 66 days (95% CI: 62-70). Differences were because of the return to EBF after a non-EBF period. The median number of returns to EBF was 2 (IQR: 1, 3). When mothers re-initiated EBF (second episode), infants gained an additional 18.8 days (SD: 25.1) of EBF, and gained 13.7 days (SD: 18.1) (third episode). In settings where women report short gaps in EBF, programmes should work with women to return to EBF. Interventions could positively influence the duration of these additional periods of EBF and their quantification should be considered in impact evaluation studies. © 2016 John Wiley & Sons Ltd.
| S-EPMC5095788 | biostudies-literature