ORCID Profile
0000-0002-8748-7637
Current Organisation
International Food Policy Research Institute
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Publisher: Elsevier BV
Date: 11-2022
DOI: 10.1093/AJCN/NQAC232
Publisher: Elsevier BV
Date: 11-2021
DOI: 10.1093/AJCN/NQAB278
Publisher: Elsevier BV
Date: 11-2021
DOI: 10.1093/AJCN/NQAB277
Publisher: Cold Spring Harbor Laboratory
Date: 18-02-2021
DOI: 10.1101/2021.02.15.21251423
Abstract: Small-quantity lipid-based nutrient supplements (SQ-LNS) reduce child stunting and provide many of the fatty acids and micronutrients that are necessary for rapid brain development that occurs during infancy and early childhood. Positive effects of SQ-LNS on developmental outcomes have been found in some trials, but not others. Our objectives were to generate pooled estimates of the effect of SQ-LNS, compared to control groups that received no intervention or an intervention without any nutritional supplement, on developmental outcomes (language, social-emotional, motor, and executive function), and to identify study-level and in idual-level modifiers of these effects. We conducted a two-stage meta-analysis of in idual participant data from 14 intervention versus control group comparisons in 13 randomized trials of SQ-LNS provided to infants and young children age 6 to 24 months in 9 low- or middle-income countries (total n=30,024). We generated study-specific estimates of SQ-LNS vs. control groups (including main effects and subgroup estimates for in idual-level effect modifiers) and pooled the estimates using fixed-effects models. We used random effects meta-regression to examine potential study-level effect modifiers. In 11-13 intervention versus control group comparisons (n=23,588-24,561), SQ-LNS increased mean language (mean difference: 0.07 standard deviations 95% CI: 0.04, 0.10), social-emotional (0.08 0.05, 0.11), and motor scores (0.08 0.05, 0.11) and reduced the prevalence of children in the lowest decile of these scores by 17% (prevalence ratio: 0.83, 95% CI 0.76, 0.91), 19% (0.81 0.74, 0.90), and 16% (0.84 0.77, 0.92), respectively. SQ-LNS also increased the prevalence of children walking without support at 12 months by 9% (1.09 1.05, 1.14). Effects of SQ-LNS on language, social-emotional, and motor outcomes were larger among study populations with a higher burden (≥ 35%) of child stunting at 18 months (mean difference 0.11-0.13 SD 8-9 comparisons) than in populations with lower stunting burden (estimates near zero). At the in idual level, greater effects of SQ-LNS were found on language among children who were acutely malnourished (mean difference: 0.31) at baseline on language (0.12), motor (0.11), and executive function (0.06) among children in households with lower socio-economic status and on motor development among later-born children (0.11), children of older mothers (0.10), and children of mothers with lower education (0.11). SQ-LNS provided daily to children in the range of 6-24 months of age can be expected to result in modest, but potentially important, developmental gains, particularly in populations with high child stunting burden. Certain groups of children who experience higher risk environments, such as those from poor households or with poor baseline nutritional status, have greater potential to benefit from SQ-LNS in developmental outcomes. This study was registered at www.crd.york.ac.uk/PROSPERO as CRD42020159971.
Publisher: Cold Spring Harbor Laboratory
Date: 08-02-2021
DOI: 10.1101/2021.02.05.21251105
Abstract: Meta-analyses have demonstrated that small-quantity lipid-based nutrient supplements (SQ-LNS) reduce stunting and wasting prevalence among infants and young children. Identification of subgroups who benefit most from SQ-LNS may facilitate program design. Our objective was to identify study-level and in idual-level modifiers of the effect of SQ-LNS on child growth outcomes. We conducted a two-stage meta-analysis of in idual participant data from 14 randomized controlled trials of SQ-LNS provided to children 6 to 24 months of age in low- and middle-income countries (n=37,066). We generated study-specific and subgroup estimates of SQ-LNS vs. control and pooled the estimates using fixed-effects models, with random-effects models as sensitivity analyses. We used random effects meta-regression to examine study-level effect modifiers. Heterogeneity was assessed using I 2 and Tau 2 statistics. Sensitivity analyses were conducted to examine whether results differed depending on inclusion criteria for arms within trials and types of comparisons. SQ-LNS provision decreased stunting (length-for-age z-score −2) by 12% (relative reduction), wasting (weight-for-length (WLZ) z-score −2) by 14%, low mid-upper arm circumference (MUAC 125 mm or MUACZ −2) by 18%, acute malnutrition (WLZ −2 or MUAC 125 mm) by 14%, underweight (weight-for-age z-score −2) by 13%, and small head size (head-circumference z-score −2) by 9%. Effects of SQ-LNS on growth outcomes generally did not differ by study-level characteristics including region, stunting burden, malaria prevalence, sanitation, water quality, duration of supplementation, frequency of contact or average reported compliance with SQ-LNS. Effects of SQ-LNS on stunting, wasting, low MUAC and small head size were greater among girls than among boys effects on stunting, underweight and low MUAC were greater among later-born (vs. first-born) children and effects on wasting and acute malnutrition were greater among children in households with improved (vs. unimproved) sanitation. Results were similar across sensitivity analyses. The positive impact of SQ-LNS on growth is apparent across a wide variety of study-level contexts. Policy-makers and program planners should consider including SQ-LNS in the mix of interventions to prevent both stunting and wasting. This study was registered at www.crd.york.ac.uk/PROSPERO as CRD42019146592.
Publisher: Cold Spring Harbor Laboratory
Date: 17-06-2022
DOI: 10.1101/2022.06.16.22276521
Abstract: Meta-analyses show that small-quantity lipid-based nutrient supplements (SQ- LNS) reduce child wasting and stunting. There is little information regarding effects on severe wasting or stunting. We aimed to identify the effect of SQ-LNS on severe wasting (weight-for-length z- score −3) and severe stunting (length-for-age z-score −3). We conducted a two-stage meta-analysis of in idual participant data from 14 randomized controlled trials of SQ-LNS provided to children 6 to 24 mo of age. We generated study-specific and subgroup estimates of SQ-LNS vs. control and pooled the estimates using fixed-effects models. We used random effects meta-regression to examine study-level effect modifiers. In sensitivity analyses, we examined whether results differed depending on study arm inclusion criteria and types of comparisons. Q-LNS provision led to a relative reduction of 31% in severe wasting (Prevalence Ratio, PR 0.69 (0.55, 0.86), n=34,373) and 17% in severe stunting (PR 0.83 (95% CI: 0.78, 0.90), n=36,795). Results were similar in most of the sensitivity analyses but somewhat attenuated when comparisons using passive control arms were excluded: PR 0.74 (0.57, 0.96), n=26,327 for severe wasting and PR 0.88 (0.81, 0.95), n=28,742 for severe stunting. Study-level characteristics generally did not significantly modify the effects of SQ-LNS, but results suggested greater effects of SQ-LNS in sites with greater burdens of wasting or stunting, or with poorer water quality or sanitation. Including SQ-LNS in preventive interventions to promote healthy child growth and development is likely to reduce rates of severe wasting and stunting. Registered at www.crd.york.ac.uk/PROSPERO as CRD42019146592.
Location: Burkina Faso
Location: United States of America
No related grants have been discovered for Elodie Becquey.