Adjusted for the inflation on the items that the poorest tend to spend their money on? The inflation statistics I've seen have a few buckets for certain kinds of expenses, but don't break things down into baskets of goods based on income.
https://libertystreeteconomics.newyorkfed.org/2023/01/inflat...
: As there are no official estimates of inflation by demographic and income groups
: In the first post of this series, we present disparities in inflation rates across racial and ethnic groups as well as across income groups between June 2019 and December 2022. We present evidence that during this period, Black, Hispanic, and middle-income households were most affected by rising inflation, experiencing steadily higher price increases relative to the overall average between early 2021 and June 2022. This pattern is largely because a greater share of these groups’ expenditures is devoted to transportation, particularly used cars and motor fuel, categories that led the 2021 inflationary episode. However, over the last five months, as transportation inflation has declined, these gaps have declined as well.
: It is likely the case that the same rate of inflation represents a greater welfare loss for lower-income than higher-income households because of the former’s lower capacity for substituting to less expensive goods, greater liquidity constraints, and larger marginal utility of real income.