Perils of scaling up: Effects of expanding a nutrition programme in Madagascar

Lay health workers in primary and community health care for maternal and child health: identification and treatment of wasting in children

BACKGROUND

Since the early 2010s, there has been a push to enhance the capacity to effectively treat wasting in children through community-based service delivery models and thus reduce morbidity and mortality.

OBJECTIVES

To assess the effectiveness of identification and treatment of moderate and severe wasting in children aged five years or under by lay health workers working in the community compared with health providers working in health facilities.

SEARCH METHODS

We searched MEDLINE, CENTRAL, two other databases, and two ongoing trials registers to 24 September 2021. We also screened the reference lists of related systematic reviews and all included studies.

SELECTION CRITERIA

We included randomised controlled trials (RCTs) and non-randomised studies in children aged five years or under with moderate wasting (defined as weight-for-height Z-score (WHZ) below -2 but no lower than ≥ -3, or mid-upper-arm circumference (MUAC) below 125 mm but no lower than 115 mm, and no nutritional oedema) or severe wasting (WHZ below -3 or MUAC below 115 mm or nutritional oedema). Eligible interventions were: • identification by lay health workers (LHWs) of children with wasting (intervention 1); • identification by LHWs of children with wasting and medical complications needing referral (intervention 2); and • identification by LHWs of children with wasting without medical complications needing referral (intervention 3). Eligible comparators were: • identification and treatment of wasting by health professionals such as nurses or doctors (at health facilities); and • identification and treatment of wasting by health facility-based teams, including health professionals and LHWs.

DATA COLLECTION AND ANALYSIS

Two review authors independently screened trials, extracted data and assessed risk of bias using the Cochrane risk of bias tool (RoB 2) and Cochrane Effective Practice and Organisation of Care (EPOC) guidelines. We used a random-effects model to meta-analyse data, producing risk ratios (RRs) for dichotomous outcomes in trials with individual allocation, adjusted RRs for dichotomous outcomes in trials with cluster allocation (using the generic inverse variance method in Review Manager 5), and mean differences (MDs) for continuous outcomes. We used the GRADE approach to assess the certainty of the evidence.

MAIN RESULTS

We included two RCTs and five non-RCTs. Six studies were from African countries, and one was from Pakistan. Six studies included children with severe wasting, and one included children with moderate wasting. All studies offered home-based ready-to-use therapeutic food treatment and monitoring. Children received antibiotics in three studies, vitamins or micronutrients in three studies, and deworming treatment in two studies. In three studies, the comparison arm involved LHWs screening children for malnutrition and referring them to health facilities for diagnosis and treatment. All the non-randomised studies had a high overall risk of bias. Interventions 1 and 2 Identification and referral for treatment by LHWs, compared with treatment by health professionals following self-referral, may result in little or no difference in the percentage of children who recover from moderate or severe wasting (MD 1.00%, 95% confidence interval (CI) -2.53 to 4.53; 1 RCT, 29,475 households; low certainty). Intervention 3 Compared with treatment by health professionals following identification by LHWs, identification and treatment of severe wasting in children by LHWs: • may slightly reduce improvement from severe wasting (RR 0.93, 95% CI 0.86 to 0.99; 1 RCT, 789 participants; low certainty); • may slightly increase non-response to treatment (RR 1.44, 95% CI 1.04 to 2.01; 1 RCT, 789 participants; low certainty); • may result in little or no difference in the number of children with WHZ above -2 on discharge (RR 0.94, 95% CI 0.28 to 3.18; 1 RCT, 789 participants; low certainty); • probably results in little or no difference in the number of children with WHZ between -3 and -2 on discharge (RR 1.09, 95% CI 0.87 to 1.36; 1 RCT, 789 participants; moderate certainty); • probably results in little or no difference in the number of children with WHZ below -3 (severe wasting) on discharge (RR 1.23, 95% CI 0.75 to 2.04; 1 RCT, 789 participants; moderate certainty); • probably results in little or no difference in the number of children with MUAC equal to or greater than 115 mm on discharge (RR 0.99, 95% CI 0.93 to 1.06; 1 RCT, 789 participants; moderate certainty); • results in little or no difference in weight gain per day (mean weight gain 0.50 g/kg/day higher, 95% CI 1.74 lower to 2.74 higher; 1 RCT, 571 participants; high certainty); • probably has little or no effect on relapse of severe wasting (RR 1.03, 95% CI 0.69 to 1.54; 1 RCT, 649 participants; moderate certainty); • may have little or no effect on mortality among children with severe wasting (RR 0.46, 95% CI 0.04 to 5.98; 1 RCT, 829 participants; low certainty); • probably has little or no effect on the transfer of children with severe wasting to inpatient care (RR 3.71, 95% CI 0.36 to 38.23; 1 RCT, 829 participants; moderate certainty); and • probably has little or no effect on the default of children with severe wasting (RR 1.48, 95% CI 0.65 to 3.40; 1 RCT, 829 participants; moderate certainty). The evidence was very uncertain for total MUAC gain, MUAC gain per day, total weight gain, treatment coverage, and transfer to another LHW site or health facility. No studies examined sustained recovery, deterioration to severe wasting, appropriate identification of children with wasting or oedema, appropriate referral of children with moderate or severe wasting, adherence, or adverse effects and other harms.

AUTHORS' CONCLUSIONS

Identification and treatment of severe wasting in children who do not require inpatient care by LHWs, compared with treatment by health professionals, may lead to similar or slightly poorer outcomes. We found only two RCTs, and the evidence from non-randomised studies was of very low certainty for all outcomes due to serious risks of bias and imprecision. No studies included children aged under 6 months. Future studies must address these methodological issues.

Learning from health system actor and caregiver experiences in Ghana and Nepal to strengthen growth monitoring and promotion

BACKGROUND

Globally, growth monitoring and promotion (GMP) of infants and young children is a fundamental component of routine preventive child health care; however, programs have experienced varying degrees of quality and success with enduring challenges. The objective of this study was to describe implementation of GMP (growth monitoring, growth promotion, data use, and implementation challenges) in two countries, Ghana and Nepal, to identify key actions to strengthen GMP programs.

METHODS

We conducted semi-structured key informant interviews with national and sub-national government officials (n = 24), health workers and volunteers (n = 40), and caregivers (n = 34). We conducted direct structured observations at health facilities (n = 10) and outreach clinics (n = 10) to complement information from interviews. We coded and analyzed interview notes for themes related to GMP implementation.

RESULTS

Health workers in Ghana (e.g., community health nurses) and Nepal (e.g., auxiliary nurse midwives) had the knowledge and skills to assess and analyze growth based on weight measurement. However, health workers in Ghana centered growth promotion on the growth trend (weight-for-age over time), whereas health workers in Nepal based growth promotion on measurement from one point in time to determine whether a child was underweight. Overlapping challenges included health worker time and workload. Both countries tracked growth-monitoring data systematically; however, there was variation in growth monitoring data use.

CONCLUSION

This study shows that GMP programs may not always focus on the growth trend for early detection of growth faltering and preventive actions. Several factors contribute to this deviation from the intended goal of GMP. To overcome them, countries need to invest in both service delivery (e.g., decision-making algorithm) and demand generation efforts (e.g., integrate with responsive care and early learning).

Malnutrition and poverty in India: does the use of public distribution system matter?

Background

Large scale public investment in Public Distribution System (PDS) have aimed to reduce poverty and malnutrition in India. The PDS is the largest ever welfare programme which provides subsidised food grain to the poor households. This study attempt to examine the extent of stunting and underweight among the children from poor and non-poor households by use of public distribution system (PDS) in India.

Methods

Data from the National Family and Health Survey-4 (NFHS-4), was used for the analysis. A composite variable based on asset deprivation and possession of welfare card provided under PDS (BPL card), was computed for all households and categorised into four mutually exclusive groups, namely real poor, excluded poor, privileged non-poor and non-poor. Real poor are those economically poor and have a welfare card, excluded poor are those economically poor and do not have welfare card, privileged poor are those economically non-poor but have welfare card, and non-poor are those who are not economically poor and do not have welfare card. Estimates of stunting and underweight were provided by these four categories. Descriptive statistics and logistic regression were used for the analysis.

Results

About half of the children from each real poor and excluded poor, two-fifths among privileged non-poor and less than one-third among non-poor households were stunted in India. Controlling for socio-economic and demographic covariates, the adjusted odds ratio of being stunted among real poor was 1.42 [95% CI: 1.38, 1.46], 1.43 [95% CI: 1.39, 1.47], among excluded poor and 1.15 [95% CI: 1.12, 1.18], among privileged non-poor. The pattern was similar for underweight and held true in most of the states of India.

Conclusions

Undernutrition among children from poor households those excluded from PDS is highest, and it warrants inclusion in PDS. Improving the quality of food grains and widening food basket in PDS is recommended for reduction in level of malnutrition in India.

Making the health system work for the delivery of nutrition interventions

Addressing malnutrition requires strategies that are comprehensive and multi‐sectoral. Within a multi‐sectoral approach, the health system is essential to deliver 10 nutrition‐specific interventions, which, if scaled up, could substantially reduce under‐5 deaths in high‐burden countries through improving maternal and child undernutrition. This study identifies the health system components required for the effective delivery of these interventions, highlighting opportunities and challenges for nutrition programmes and policies. We reviewed implementation guidance for each nutrition‐specific intervention, mapping the delivery process for each intervention and determining the health system components required for their delivery. We integrated the components into a single health systems framework for nutrition, illustrating the pathways by which health system components influence household‐level determinants of nutrition and individual‐level health outcomes. Nutrition‐specific interventions are typically delivered in one of four ways: (i) when nutrition interventions are intentionally sought out, (ii) when care is sought for other, unrelated interventions, (iii) at a health facility after active community case finding and referral, and (iv) in the community after active community case finding. A health system enables these processes by providing health services and facilitating care seeking for services, which together require a skilled and motivated health workforce, an effective supply chain, demand for services and access to services. The nutrition community should consider the processes by which nutrition‐specific interventions are delivered and the health system components required for their success. Programmes should encourage the delivery of nutrition interventions at every client–provider interaction and should actively generate demand for services—in general, and for nutrition services specifically.

Effects of nutritional supplementation and home visiting on growth and development in young children in Madagascar: a cluster-randomised controlled trial

BACKGROUND

Evidence from efficacy trials suggests that lipid-based nutrient supplementation (LNS) and home visits can be effective approaches to preventing chronic malnutrition and promoting child development in low-income settings. We tested the integration of these approaches within an existing, large-scale, community-based nutrition programme in Madagascar.

METHODS

We randomly allocated 125 programme sites to five intervention groups: standard-of-care programme with monthly growth monitoring and nutrition education (T0); T0 plus home visits for intensive nutrition counselling through an added community worker (T1); T1 plus LNS for children aged 6-18 months (T2); T2 plus LNS for pregnant or lactating women (T3); or T1 plus fortnightly home visits to promote and encourage early stimulation (T4). Pregnant women (second or third trimester) and infants younger than 12 months were enrolled in the trial. Primary outcomes were child growth (length-for-age and weight-for-length Z scores) and development at age 18-30 months. Analyses were by intention to treat. The trial was registered with the ISRCTN registry, number ISRCTN14393738.

FINDINGS

The study enrolled 3738 mothers: 1248 pregnant women (250 women in each of the T0, T1, T2, and T4 intervention groups and 248 in the T3 intervention group) and 2490 children aged 0-11 months (497 children in T0, 500 in T1, 494 in T2, 499 in T3, and 500 in T4) at baseline who were assessed at 1-year and 2-year intervals. There were no main effects of any of the intervention groups on any measure of anthropometry or any of the child development outcomes in the full sample. However, compared with children in the T0 intervention group, the youngest children (<6 months at baseline) in the T2 and T3 intervention groups who were fully exposed to the child LNS dose had higher length-for-age Z scores (a significant effect of 0·210 SD [95% CI -0·004 to 0·424] for T2 and a borderline effect of 0·216 SD [0·043 to 0·389] for T3) and lower stunting prevalence (-9·0% [95% CI -16·7 to -1·2] for T2 and -8·2% [-15·6 to -0·7] for T3); supplementing mothers conferred no additional benefit.

INTERPRETATION

LNS for children for a duration of 12 months only benefited growth when it began at an early age, suggesting the need to supplement infants at age 6 months in a very low-income context. The lack of effect of the early stimulation messages and home visits might be due to little take-up of behaviour-change messages and delivery challenges facing community health workers.

FUNDING

Eunice Kennedy Shriver National Institutes of Child Health and Human Development, Strategic Impact Evaluation Fund, World Bank Innovation Grant, Early Learning Partnership Grant, World Bank Research Budget, Japan Nutrition Trust Fund, Power of Nutrition, and the National Nutrition Office of Madagascar.

Lipid-Based Nutrient Supplementation Reduces Child Anemia and Increases Micronutrient Status in Madagascar: A Multiarm Cluster-Randomized Controlled Trial

BACKGROUND

Iron deficiency anemia affects hundreds of millions of women and children worldwide and is associated with impaired infant outcomes. Small-quantity lipid-based nutrient supplement (LNS) have been found to reduce the prevalence of anemia and iron deficiency in some trials.

OBJECTIVES

We evaluated the effectiveness of daily LNS supplementation on child anemia and micronutrient status in Madagascar within the context of an existing, scaled-up nutrition program.

METHODS

We cluster-randomized 125 communities to (T0) a routine program with monthly growth monitoring and nutrition education; (T1) T0 + home visits for intensive nutrition counselling; (T2) T1 + LNS for children aged 6-18 mo; (T3) T2 + LNS for pregnant/lactating women; or (T4) T1 + parenting messages. Pregnant women and infants aged <12 mo were enrolled in 2014 and followed for 2 y. Child outcome measures included hemoglobin and anemia assessed using the HemoCue 301 system (n = 3561), and serum ferritin and soluble transferrin receptor as markers of iron status, retinol-binding protein as a marker of vitamin A status, and C-reactive protein and α-1 acid glycoprotein from a finger stick blood draw among a subsample (n = 387). We estimated mean difference using linear regression and prevalence ratios using modified Poisson regression accounting for the clustered design. All analyses were intention-to-treat.

RESULTS

Children in the LNS groups (T2 and T3) had ∼40% lower prevalence of anemia and iron deficiency anemia and 25% lower prevalence of iron deficiency than children in the control group (T0) (P < 0.05 for all). There were no differences in any of the biomarkers when comparing children in the T4 group with those in T0; nor were there differences between T3 and T2.

CONCLUSIONS

Our findings suggest the provision of LNS in the context of a large-scale program offers significant benefits on anemia and iron status in young children.This trial was registered at www.isrctn.com as ISRCTN14393738.

Integrating nutrition services into health care systems platforms: Where are we and where do we go from here

Integrating maternal-child nutrition into health care services is a desirable but complex task that requires implementation research studies. This special supplement, entitled "How to Strengthen Nutrition into the Health Platform: Programmatic Evidence and Experience from Low- and Middle-Income Countries" presents a collection of mixed-methods research and case studies mostly conducted in sub-Saharan Africa that help us gain a better understanding of the barriers and facilitators for this integration to happen. Collectively, the evidence confirms that integrating nutrition services as part of health care systems and other platforms is feasible, but for that to be successful, there is a need to address strong barriers related to all six key health care systems building blocks identified by the World Health Organization. These include financing, health information systems, health workforce, supplies and technology, governance, and service delivery. Moving forward, it is crucial that more robust implementation science research is conducted within the rough and tumble of real-world programming to better understand how to best integrate and scale up nutrition services across health care systems and other platforms based on dynamic complex adaptive systems frameworks. This research can help better understand how the key health care systems building blocks need to interlock and communicate with each other to improve the policymakers' ability to integrate and scale up nutrition services in a more timely and cost-effective way.

Perils of scaling up: Effects of expanding a nutrition programme in Madagascar

Scaling up integrated nutrition programmes from small, targeted interventions or pilot studies to large-scale government-run programmes can be challenging, with risks of changing the nature and quality of the interventions such that effectiveness is not sustained. In 1999, the Government of Madagascar introduced a nationwide, community-based, growth-monitoring and nutrition education programme, which was gradually scaled up throughout the country until 2011. Data from three nationally representative surveys, administered pre- and post-programme implementation, in participating and non-participating communities, were used to evaluate the effectiveness of the programme to reduce malnutrition in children under 5 after two phases of expansion (1999-2004 and 2004-2011). In our analyses, we compared "original" communities, who had initiated the programme during the first phase, and "new" communities, who initiated the programme during the second phase. "Original" communities demonstrated a significant effect on mean weight-for-age and on the prevalence of underweight by 2004; this effect was sustained at a reduced level through 2011. In contrast, "new" communities showed no benefits for any childhood nutritional outcomes. An explanation for these findings may be that community health workers in the "new" communities reported lower motivation and less use of key messages and materials than those in the "original" communities. Frontline workers reported increased workload and irregular pay across the board during the second phase of programme expansion. Our findings underscore the risk of losing effectiveness if programme quality is not maintained during scale-up. Key factors, such as training and motivation of frontline workers, are important to address when bringing a programme to scale.