Summary statistics of MENA, SSA, and ECA regions combined (Total Sample).

Summary statistics of MENA, SSA, and ECA regions combined (Total Sample).中东和北非（Middle East and North Africa, MENA）、撒哈拉以南非洲（Sub-Saharan Africa, SSA）以及欧洲和中亚（Europe and Central Asia, ECA）三大区域合并后的描述性统计量（总样本）。