Global Extreme Poverty Dollar a Day

The extreme poverty rate represents the share of the people in a country below a poverty line. Here two such lines are used: a cost of basic needs approach following Allen (2017), and the short cut approach of the 1.9 dollar-a-day. The estimates cover the period 1820-2018 (yearly).极端贫困率（extreme poverty rate）指一国中处于贫困线以下的人口占总人口的比例。本数据集采用两类贫困线测算标准：其一为遵循Allen(2017)提出的基本需求成本法，其二为每日1.9美元的简易测算法。本次估算的时间跨度为1820年至2018年，涵盖所有年度统计数据。