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| Re: District Codes in recode files [message #123 is a reply to message #122] |
Mon, 18 March 2013 14:35   |
ClaraB-DHS
Messages: 38
Registered: March 2013
Location: Maryland
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Due to the confidentiality requirements of the data, administrative classifications below the DHS regions level are not able to be included in the recode files. If your analysis will be conducted at a level that does not align with DHS regions, you may use the GPS data within a Geographic Information System (GIS) to join the displaced cluster locations to other data sources. Visit the Available Datasets page: https://dhsprogram.com/data/available-datasets.cfm to view whether GPS data is available for your survey(s) of interest.
[Updated on: Tue, 20 February 2024 07:48] by Moderator Report message to a moderator |
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| Re: District Codes in recode files [message #208 is a reply to message #123] |
Wed, 27 March 2013 09:13 |
Thea-DHS
Messages: 28
Registered: March 2013
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Caution is advised when reclassifying survey clusters to areas that are smaller than DHS regions, as the survey was not designed to be representative below the DHS regions level, which in most countries is the administrative unit 1 (e.g. Province, State). Some cases such as the Malawi 2011 DHS was sampled to be representative at both the district level and the province level.
You may use the GPS data to reclassify the cluster locations from each survey according to their location. The GPS datafiles contain a shapefile of the cluster locations for use in a GIS software package. QGIS (http://qgis.org/) is a good free software option if you do not have access to paid GIS software products. GADM (http://www.gadm.org/) is a good resource of administrative shapefiles that can be used in the reclassification process.
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| Re: District Codes in recode files [message #702 is a reply to message #690] |
Wed, 21 August 2013 14:19 |
ClaraB-DHS
Messages: 38
Registered: March 2013
Location: Maryland
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The same principle applies to the Egypt data as to all other DHS countries.
The recode file does not contain information on the district in which each cluster is located, only the DHS region (which, in the case of the Egypt 2008 DHS correspond to the Urban governorates, the Frontier governorates, Upper Egypt and Lower Egypt). You could import the GPS data points into a Geographic Information System (GIS) software such as ArcMap or QGIS and spatially join the displaced cluster locations to GIS polygon data of the district boundaries (as described in the posts above).
However, as mentioned previously on this forum thread, we do advise caution when conducting your analysis at smaller administrative levels, as the surveys were not designed to be representative below the DHS regions level. Also, please bear in mind that, because the displacement for this survey was restricted to the DHS region level, it is possible that some clusters were displaced across lower level (e.g. district) boundaries during this process. For more information on the displacement process, please see our website http://www.measuredhs.com/What-We-Do/GPS-Data-Collection.cfm .
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| Re: District Codes in recode files [message #1218 is a reply to message #208] |
Thu, 23 January 2014 16:13 |
yashin5
Messages: 1
Registered: January 2014
Location: Washington DC
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Hi,
I was very interested to hear that in some cases, the DHS data may be representative at the district level. I am interested in looking at baseline HIV testing rates (and potentially other indicators) for a district of Nampula Province (Nacala a Velha) in Mozambique and wondered if the most recent DHS or AIS in Mozambique is representative at the district level.
Thanks for your help.
Yashin
ysl
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| Re: District Codes in recode files [message #2512 is a reply to message #2495] |
Wed, 02 July 2014 10:52 |
Thea-DHS
Messages: 28
Registered: March 2013
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Phillip,
Thanks for your post. Please can you confirm that you are using the GPS data file mwge62fl.zip from the Malawi 2010 DHS and the regions boundary shapefile for the same survey downloaded from the Spatial Data Repository ( http://spatialdata.dhsprogram.com/boundaries.html?country=MW)?
The displacement of the GPS data for the Malawi 2010 DHS was restricted at the second administrative level which means that it was ensured that no coordinates were displaced across district boundaries. Therefore, all points in the GPS dataset fall in the correct district and survey region when mapped onto the DHS regions shapefile. Please note that shapefiles from different sources vary according to their level of detail and date created. Therefore, a spatial join using a different shapefile can produce slightly different results for areas that are close to boundaries.
Note that the Malawi 2010 DHS is representative at 2 levels, so the boundaries shapefile downloaded from the Spatial Data Repository includes the boundaries of both the first level (the three administrative regions) and the second level (the 27 districts or groupings of districts). Before conducting the spatial join, you will need to create a separate shapefile of just the level 2 regions by selecting and exporting them.
Also note that there were 22 clusters in that survey that had missing coordinates and so were assigned zero as their latitude and longitude.
If this has not answered your question adequately, please reply.
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