Definition
GEO_PK1991 (V101_PK1991) indicates the region of Pakistan where the respondent was interviewed. DHS regions in the 1991 Pakistan survey are equivalent to provinces.
Other sample years have their own sample-specific geography variables. There is also an integrated variable, GEO_PK1991_2017, that provides spatially consistent units over time.
A GIS map for GEO_ PK1991 (in shapefile format) can be downloaded from the DHS Program Spatial Data Repository [URL omitted from DDI.] Boundaries page.