Home > Data Services > Catalog . Restricted Data . Census . ACS

Search Data Services

Meta Search
search across all the following databases:

Data Catalog
Data and documentation

Common questions and answers.

Entire collection of data resources.

Latest Data News

RSS Feed icon

U.S. Department of Education Releases College Scorecard Data

Big changes coming to IRBs . . . . still time to comment

Will this be an election issue in the US?

U.S. and World Population Clock Has Been Updated with New Features

2013 Income, Poverty, and Health Insurance data

Data Services Knowledge Base


What is up with the allocation item for earnings in the March CPS? It drops from a reasonable 22% to around 2% between 1987 and 1988. I am using data from IPUMS-CPS (qincwage).


This is a good data mystery.

A longer answer is available from this link:


The short answer is that the CPS changed its data collection and edit procedures in 1988. They added a whole-case imputation flag, which the IPUMS-CPS does not include (FL-655). Below are two links to code, which show how to calculate imputation. The variable names are not IPUMS-harmonized names, but instead match the original March CPS names. This makes sense as for now, you have to go to another source to get the FL-665 item.

Direct Links:

Related Question Groups: