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SPLITNUM
Number of person records in household, before large group quarters were split up (100% datasets)

Description

SPLITNUM provides the original number of person records that are included in the sampled unit in the 100% datasets. These person records all have the same original 100% serial number (SPLITHID).

As a part of IPUMS data processing, group quarters units containing more than 60 people were split into 1-person households, each with their own unique value in the IPUMS SERIAL variable. For this reason, the NUMPREC value for a group quarters unit containing more than 60 people will always be 1.

Researchers needing to analyze intact group quarters units containing more than 60 people (such as the residents of a large prison or poorhouse) should use SPLITNUM instead of NUMPREC.

Units that were split into 1-person households can be identified with the SPLIT variable.

User Note: Original serial numbers in the 1940 100% file were generated at the State level. Researchers will need to use STATEFIP/STATEICP, SERIAL40, and NUMPREC40 to uniquely identify individuals from split group quarters.

Codes

This variable is only available in the 100% datasets. NUMPREC40 is a 4-digit numeric variable which provides the original number of person records that are included in the sampled unit in the 100% datasets. These person records all have the same original 100% serial number (SPLITHID).

As a part of IPUMS data processing, group quarters units containing more than 60 people were split into 1-person households, each with their own unique value in the IPUMS SERIAL variable. For this reason, the NUMPREC value for a group quarters unit containing more than 60 people will always be 1. Researchers needing to analyze intact group quarters units containing more than 60 people (such as the residents of a large prison or poorhouse) should use SPLITNUM instead of NUMPREC. SPLITNUM specific variable codes for missing, edited, or unidentified observations, observations not applicable (N/A), observations not in universe (NIU), top and bottom value coding, etc. are provided below by Census year (and data sample if specified).

User Note: Units that were split into 1-person households can be identified with the SPLIT variable.

User Note: Original serial numbers in the 1940 100% file were generated at the State level. Researchers will need to use STATEFIP/STATEICP, SERIAL40, and NUMPREC40 to uniquely identify individuals from split group quarters.

SPLITNUM Specific Variable Codes

Comparability

This variable is only available in the 100% datasets.

Universe

  • All households and group quarters.

Availability

United States
  • 2016: --
  • 2015: --
  • 2014: --
  • 2013: --
  • 2012: --
  • 2011: --
  • 2010: --
  • 2009: --
  • 2008: --
  • 2007: --
  • 2006: --
  • 2005: --
  • 2004: --
  • 2003: --
  • 2002: --
  • 2001: --
  • 2000: --
  • 1990: --
  • 1980: --
  • 1970: --
  • 1960: --
  • 1950: --
  • 1940: 100%
  • 1930: 100%
  • 1920: 100%
  • 1910: 100%
  • 1900: 100%
  • 1880: --
  • 1870: --
  • 1860: --
  • 1850: 100%
Puerto Rico
  • 2016: --
  • 2015: --
  • 2014: --
  • 2013: --
  • 2012: --
  • 2011: --
  • 2010: --
  • 2009: --
  • 2008: --
  • 2007: --
  • 2006: --
  • 2005: --
  • 2000: --
  • 1990: --
  • 1980: --
  • 1970: --
  • 1930: --
  • 1920: --
  • 1910: --

Flags

This variable has no flags.

Editing Procedure

There is no editing procedure available for this variable.