Manley James, Alderman Harold
Economics Department, Towson University College of Business & Economics, Towson, Maryland, USA.
International Food Policy Research Institute, Washington, DC, USA.
Matern Child Nutr. 2025 Jul;21(3):e70026. doi: 10.1111/mcn.70026. Epub 2025 Mar 28.
Childhood anaemia is common and debilitating. Nutrition-specific policies are effective for addressing anaemia in many contexts but less is known about nutrition-sensitive policies such as cash transfers. We reviewed over 4000 studies and gathered 26 estimates of the effect of cash transfer programmes on childhood haemoglobin and anaemia. Overall, neither the impact of cash on haemoglobin (0.065 d/L, CI [-0.054, 0.184]) nor on anaemia prevalence (-0.092, CI [-1.227, 1.042]) were significant. While cash on its own had basically a null effect, programmes that provided cash in combination with other interventions such as behaviour change communication or nutritional supplements were more successful. The impact of social protection on haemoglobin and anaemia is surprisingly understudied compared to height, on which a previous study found well over 100 impacts of cash transfer programmes. Overall impacts of cash transfer programmes on haemoglobin and anaemia are weak: evidence is inconclusive at best. Cash transfer programmes are more successful in combination with other programmes providing education and/or nutritional supplements.
儿童贫血很常见且会导致身体虚弱。在许多情况下,针对特定营养的政策对解决贫血问题是有效的,但对于诸如现金转移等营养敏感型政策,人们了解得较少。我们查阅了4000多项研究,并收集了26项关于现金转移计划对儿童血红蛋白和贫血影响的评估数据。总体而言,现金对血红蛋白的影响(0.065 d/L,置信区间[-0.054, 0.184])以及对贫血患病率的影响(-0.092,置信区间[-1.227, 1.042])均不显著。虽然现金本身基本没有效果,但将现金与其他干预措施(如行为改变宣传或营养补充剂)相结合的计划则更为成功。与身高相比,社会保护对血红蛋白和贫血的影响令人惊讶地未得到充分研究,此前一项研究发现现金转移计划对身高有超过100种影响。现金转移计划对血红蛋白和贫血的总体影响较弱:证据充其量是不确定的。现金转移计划与其他提供教育和/或营养补充剂的计划相结合时更为成功。