Child poverty is a global concern which is usually not captured for monetary measures. Therefore, multidimensional approaches to measure child poverty have increased in the past decade. However, there is still no consensus about what constitutes multidimensional child poverty, how it should be measured, and which criteria should be adopted to identify poor children in a society. We discuss the opinions of experts in order to inform the methodological decision-making processes in multidimensional poverty measurement. We conducted thematic analysis of semi-structured interviews with 27 global experts on child poverty and poverty measurement. We contrasted the degree of agreement and reasons to include dimensions and indicators in a multidimensional child-poverty measure for low- and middle-income countries. We found agreement and disagreement about the inclusion of multiple dimensions and indicators. On the one hand, Education, Nutrition, Water and Sanitation, Access to Health Care, and Immunisation were the indicators with the highest levels of agreement. On the other hand, Safety, Child Labour, Access to Information, and Cultural Activities were the group of indicators producing less agreement between experts. We found that debates regarding decisions in the process of designing a multidimensional child-poverty measure were related to the theoretical perspectives on child poverty, the rationale of the indicators, the data available, and technical issues. In conclusion, methodological decisions about the selection of dimensions and indicators to measure multidimensional child poverty requires a critical reflection on the perspectives of poverty that the researchers use, the objective of the measure, the data available, and how deprivations can be operationalised.

儿童贫困是一个全球关注的问题，通常无法通过货币措施来衡量。因此，在过去十年中，衡量儿童贫困的多维方法有所增加。然而，对于多维儿童贫困的构成、如何衡量以及应采用哪些标准来识别社会中的贫困儿童，目前还没有达成共识。我们讨论了专家的意见，以便为多维贫困测量的方法论决策过程提供信息。我们对 27 位全球儿童贫困和贫困衡量专家的半结构化访谈进行了专题分析。我们比较了在低收入和中等收入国家的多维儿童贫困衡量标准中纳入维度和指标的一致程度和理由。我们发现对包含多个维度和指标的一致和不一致。一方面，教育、营养、水和卫生、获得医疗保健和免疫接种是达成最高水平的指标。另一方面，安全、童工、信息获取和文化活动是专家之间产生较少一致性的一组指标。我们发现，在设计多维儿童贫困衡量标准的过程中，有关决策的争论与儿童贫困的理论观点、指标的基本原理、可用数据和技术问题有关。总之，关于选择维度和指标来衡量多维儿童贫困的方法决定需要对研究人员使用的贫困观点、衡量目标、可用数据以及如何实施剥夺进行批判性反思。