evidence-based blog of Filippo Dibari

Posts Tagged ‘anemia’

Evidence of Effective Approaches to SBCC for Preventing and Reducing Stunting and Anemia

In Under-nutrition on October 27, 2014 at 3:28 pm

From Spring web page

(download the doc)

Evidence suggests that simply increasing knowledge and awareness of good nutrition practices rarely leads to sustained behavior change, nor is sustained change in nutrition behavior likely to be achieved through a single activity. Several specific behaviors or practices impact nutritional status during the critical first 1,000 days (pregnancy to age two), while complex, contextual determinants also influence individual decisions to consider, test, adopt and sustain a given behavior or practice. The field of Social and Behavior Change Communication (SBCC) is a collection of approaches and tools informed by behavioral theories and used to design public health interventions.

This review, part of a broader effort by SPRING to support governments and other stakeholders in their delivery of high impact nutrition practices, provides a summary of peer-reviewed evidence regarding the effectiveness of SBCC approaches to increase the uptake of three key nutrition behaviors: women’s dietary practices during pregnancy and lactation, breastfeeding practices, and complementary feeding practices. SBCC interventions have been broadly categorized into three areas: interpersonal communication; use of media; and community/social mobilization. This review also identifies gaps in the evidence and recommendations for further areas of study.

This review includes a total of 91 studies identified using the Ovid MEDLINE database. Recognizing the potential value of a broad array of study designs, results from five study types are included: reviews (including meta-analysis), randomized controlled trials, longitudinal studies, repeated cross-sectional studies, and cross-sectional studies. Excluded studies include those with data from high income countries, those published prior to 2000, those written in a language other than English, and those that focused exclusively on refinement of a research methodology. Other exclusions are noted in the text.

Each of the following sections contain interactive tables featuring the articles reviewed for this study.

Findings related to women’s dietary practices during pregnancy and lactation

Undernutrition during pregnancy and lactation is a critical determinant of maternal, neonatal, and child health outcomes. Improving dietary adequacy during pregnancy and lactation is important to help women accommodate their nutritional requirements as well as their children’s requirements during intrauterine development and while breastfeeding (Haileslassie, et al., 2013).

The body of literature on the effectiveness of SBCC to improve women’s dietary practices during pregnancy and lactation is still small (only 15 peer-reviewed studies met the inclusion criteria), but indicates that SBCC approaches can and do succeed in improving uptake of the behaviors promoted. The greatest gap in the literature was in evidence of effectiveness of SBCC in improving rest and workload during pregnancy. Given the importance of women’s dietary practices during pregnancy and lactation, the dearth of evidence is notable.

Browse this section’s interactive table of articles

Findings related to breastfeeding practices

Breastfeeding is widely recognized as one of the most costeffective investments to improve child survival (UNICEF, 2013), as well as cognitive and motor development and academic performance (Horta et al, 2013). Breastfeeding also imparts critical benefits to the woman, including natural postnatal infertility. Despite the promise of optimal breastfeeding practices, rates for WHO recommended breastfeeding practices remain low (UNICEF, 2013).

The body of literature on the effectiveness of SBCC approaches in improving breastfeeding practices is strong and broad (62 peer-reviewed studies met the inclusion criteria) and supports the claim that SBCC approaches can and do succeed in improving uptake of the behaviors promoted.

Evidence from several studies strongly suggests that increasing the number of contacts increases the positive effect of SBCC on breastfeeding practices. Greater consistency in how breastfeeding practices are measured – the definitions of indicators and the methods of data collection – exists for breastfeeding practices when compared to women’s dietary practices and complementary feeding practices, but even with globally-recognized indicators and measurement guidance, considerable variation remains.

Browse this section’s interactive table of articles

Findings related to complementary feeding practices

Timely appropriate complementary feeding are critical to a child’s growth and development and could avert millions of disability-adjusted life years, but global coverage of optimal complementary feeding practices remains low.

The evidence of the effect of SBCC on complementary feeding practices is quite broad (30 studies met the inclusion criteria) and clearly indicates that SBCC interventions can improve a wide range of complementary feeding practices. However, measures of optimal complementary feeding are so varied that it is particularly challenging to draw conclusions regarding the effectiveness of particular SBCC approaches.

Browse this section’s interactive table of articles

Common findings

The SBCC approach most used, and the only one used without other communication interventions, was interpersonal communication. While media and community/ social mobilization were used, they were always used with at least one other communication approach.

Studies included in this review employed a wide range of implementation strategies with variations in the interactions or combinations with other interventions, target groups, content, messages, scale and coverage, length and intensity, as well as context. Very little has been done to compare the effect of differences in the delivery science, particularly when implemented at scale.

The majority of the studies were implemented on a small scale, typically with fewer than 500 people per group.

Additionally, there was considerable variation in how women’s dietary practices and complementary feeding practices were defined and measured.

Conclusions

Evidence suggests that using multiple SBCC approaches and channels to change behaviors is more effective than using one, that targeting multiple contacts has a greater effect than targeting only the woman herself, and that more visits or contacts results in greater change. However, such comparisons are not well-tested in the literature. Very few comparisons have been made between the effect of timing of communications and what little has been done presents contradictory evidence. Unfortunately, it can be challenging to conduct such studies that compare differences in delivery and/or disaggregate single approaches within a multiapproach intervention. SBCC practitioners and researchers must assess whether that line of research is useful.

Differences in local context (including social norms, culture, and environmental factors) as well as differences in the implementation and scale of implementation also affect the success of interventions. This underscores the importance of proper context assessments, formative research and/or ethnographic study prior to SBCC implementation.

Finally, if practices and indicators are not standardized, a project may improve behaviors but it will be difficult to attribute changes in outcomes. This underscores the importance of developing practices and indicators that are globally recognized, accepted, and used by the research and program communities. At the same time, many nutrition interventions are suited to iterative programming for incremental change toward the optimal, evidence-based behaviors. This means that more easily achieved indicators (components of standardized indicators or shorter time periods) may also be needed to measure progress toward the ultimate goal of changes in the standardized indicators of behaviors.

Other areas particularly important for future evaluations and operations research include:

  • the effect of targeting multiple audiences or influencers of the behaviors being promoted, rather than focusing on one target population;
  • the effect of the same SBCC intervention implemented in different contexts (social and environmental);
  • the effectiveness of different approaches (including intensity and targeting) for different behaviors;
  • the cost and cost effectiveness of various SBCC approaches (particularly as it relates to scalability); and
  • the effectiveness and sustainability of these approaches when implemented at scale.

The Effect of Adding Ready-to-Use Supplementary Food to a General Food Distribution on Child Nutritional Status and Morbidity: A Cluster-Randomized Controlled Trial

In Under-nutrition on February 5, 2014 at 11:18 am

by Lieven Huybregts, Freddy Houngbé, Cécile Salpéteur, Rebecca Brown, Dominique Roberfroid, Myriam Ait-Aissa, Patrick Kolsteren.

PLOS Medicine | 1 September 2012 | Volume 9 | Issue 9

(download the paper)

 

Abstract

Background

Recently, operational organizations active in child nutrition in developing countries have suggested that blanket feeding strategies be adopted to enable the prevention of child wasting. A new range of nutritional supplements is now available, with claims that they can prevent wasting in populations at risk of periodic food shortages. Evidence is lacking as to the effectiveness of such preventive interventions. This study examined the effect of a ready-to-use supplementary food (RUSF) on the prevention of wasting in 6- to 36-mo-old children within the framework of a general food distribution program.

Methods and Findings

We conducted a two-arm cluster-randomized controlled pragmatic intervention study in a sample of 1,038 children aged 6 to 36 mo in the city of Abeche, Chad. Both arms were included in a general food distribution program providing staple foods. The intervention group was given a daily 46 g of RUSF for 4 mo. Anthropometric measurements and morbidity were recorded monthly. Adding RUSF to a package of monthly household food rations for households containing a child assigned to the intervention group did not result in a reduction in cumulative incidence of wasting (incidence risk ratio: 0.86; 95% CI: 0.67, 1.11; p = 0.25). However, the intervention group had a modestly higher gain in height-for-age (+0.03 Z-score/mo; 95% CI: 0.01, 0.04; p<0.001). In addition, children in the intervention group had a significantly higher hemoglobin concentration at the end of the study than children in the control group (+3.8 g/l; 95% CI: 0.6, 7.0; p = 0.02), thereby reducing the odds of anemia (odds ratio: 0.52; 95% CI: 0.34, 0.82; p = 0.004). Adding RUSF also resulted in a significantly lower risk of self-reported diarrhea (−29.3%; 95% CI: 20.5, 37.2; p<0.001) and fever episodes (−22.5%; 95% CI: 14.0, 30.2; p<0.001). Limitations of this study include that the projected sample size was not fully attained and that significantly fewer children from the control group were present at follow-up sessions.

Conclusions

Providing RUSF as part of a general food distribution resulted in improvements in hemoglobin status and small improvements in linear growth, accompanied by an apparent reduction in morbidity.

 

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The Effect of Adding Ready-to-Use Supplementary Food to a General Food Distribution on Child Nutritional Status and Morbidity: A Cluster-Randomized Controlled Trial

In Under-nutrition on October 10, 2012 at 3:07 pm

by Lieven Huybregts, Freddy Houngbe´, Cecile Salpeteur, Rebecca Brown, Dominique Roberfroid, Myriam Ait-Aissa, Patrick Kolsteren

PLoS Med. 2012 Sep;9(9)

(download the entire paper)

Abstract

Background

Recently, operational organizations active in child nutrition in developing countries have suggested that blanket feeding strategies be adopted to enable the prevention of child wasting. A new range of nutritional supplements is now available, with claims that they can prevent wasting in populations at risk of periodic food shortages. Evidence is lacking as to the effectiveness of such preventive interventions. This study examined the effect of a ready-to-use supplementary food (RUSF) on the prevention of wasting in 6- to 36-mo-old children within the framework of a general
food distribution program.

Methods and Findings

We conducted a two-arm cluster-randomized controlled pragmatic intervention study in a sample of 1,038 children aged 6 to 36 mo in the city of Abeche, Chad. Both arms were included in a general food distribution program providing staple foods. The intervention group was given a daily 46 g of RUSF for 4 mo. Anthropometric measurements and morbidity were recorded monthly. Adding RUSF to a package of monthly household food rations for
households containing a child assigned to the intervention group did not result in a reduction in cumulative incidence of wasting (incidence risk ratio: 0.86; 95% CI: 0.67, 1.11; p = 0.25). However, the intervention group had a modestly higher gain in height-for-age (+0.03 Z-score/mo; 95% CI: 0.01, 0.04; p,0.001). In addition, children in the intervention group had a significantly higher hemoglobin concentration at the end of the study than children in the control group (+3.8 g/l; 95% CI:0.6, 7.0; p = 0.02), thereby reducing the odds of anemia (odds ratio: 0.52; 95% CI: 0.34, 0.82; p = 0.004). Adding RUSF also resulted in a significantly lower risk of self-reported diarrhea (229.3%; 95% CI: 20.5, 37.2; p,0.001) and fever episodes (222.5%; 95% CI: 14.0, 30.2; p,0.001). Limitations of this study include that the projected sample size was not fully attained and that significantly fewer children from the control group were present at follow-up sessions.

Conclusions

Providing RUSF as part of a general food distribution resulted in improvements in hemoglobin status and small improvements in linear growth, accompanied by an apparent reduction in morbidity.

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NB – To follow up this topic (or others), enter your email in the rectangle at the bottom/right side of this page (you can un-subscribe any time).

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