Re: Protected Water Source [message #22813 is a reply to message #22812] |
Fri, 14 May 2021 13:06 |
Bridgette-DHS
Messages: 3199 Registered: February 2013
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Senior Member |
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Following is a response from DHS Research & Data Analysis Director, Tom Pullum:
You are probably looking at 61 (tanker truck) and 62 (cart with small tank), which changed in the classification. DHS follows the latest guidance from WHO. Sometimes, based on actual empirical testing of water samples, the guidance changes. The latest (2020) version of the Guide to DHS Statistics gives the current classification. See Guide_to_DHS_Statistics_DHS-7_v2.pdf. Note that such changes unfortunately imply a need to update earlier estimates from older surveys.
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