Poverty and Inequality Platform (PIP): Percentiles(v2)
Description
Survey years
The Poverty and Inequality Platform: Percentiles database reports 100 points ranked according to the consumption or income distributions for each survey data available in the World Bank’s Poverty and Inequality Platform (PIP). There are, as of January 12, 2023, a total of 2,087 country-survey-year datapoints, which include 1,685 distributions based on microdata, 234 based on binned data, and 163 based on grouped data. For the grouped data, the percentiles are derived by fitting a parametric Lorenz distribution following Datt (1998). All distributions are referred to as survey data henceforth.
Details
Each distribution reports 100 points per country per survey year ranked from the smallest income (percentile 1) to the largest (percentile 100). For each percentile, the database reports the following variables: The average welfare within the percentile group (avg_welfare); the value for the upper threshold of the percentile group (quantile); the share of the population in the percentile group (which might deviate slightly from 1% due to coarseness in the raw data) (pop_share); and the share of income held by each percentile group (welfare_share). In addition, the database reports the welfare measure (welfare_type) used in the survey data—income or consumption—and the region covered (reporting_level)—urban, rural, or national.
Stata code example
Below is an example of how to use the database to generate an anonymous growth incidence curve for Bangladesh between 2005 and 2010
keep if country_code=="BGD" & reporting_level == "national"
keep if inlist(year,"2005","2010")
bys country_code bin (year): gen growth05_10 = ///
(avg_welfare/avg_welfare[_n-1] - 1) * 100
twoway connected growth05_10 bin, ytitle("%") ///
title("Cumulative growth in Bangladesh, 1991-2016")
Lineup years
Not yet available