Description

GEO_NG1990 (V101_NG1990) indicates the region of Nigeria where the respondent was interviewed. DHS regions in the 1990 Nigeria survey are equivalent to grouped states.

Other sample years have their own sample-specific geography variables. There are also integrated variables, GEO_NG2003_2018 and GEOALT_NG2008_2018, that provide spatially consistent units over time. The 1990 Nigeria sample is excluded from GEO_NG2003_2013 and GEOALT_NG2008_2018 due to inconsistent boundaries.

A GIS map for GEO_NG1990 (in shapefile format) can be downloaded from the DHS Program Spatial Data Repository Boundaries page.

Comparability

GEO_NG1990 (V101_NG1990) is a country- and sample-specific variable and has no comparability issues.

Comparability - Standard DHS

GEO_NG1990, like other V101 variables, is a geographic variable added during processing of the DHS data. V101 is included in all Phases of the DHS.

Universe