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  • Strategic or operational?
  • Basemap, baseline or situational?
  • When might it be produced?
  • Intended audience
  • Influence on humanitarian decisions
  • Methods
  • Data

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  1. Population

Affected population

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Last updated 11 months ago

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This shows the population that has been affected by the emergency. The affected population is the key figure to be reported during a response, and will determine the type of response required. During the acute stages of an emergency these figures can be highly changeable and uncertain, but as the response continues the figures should stabilise and then hopefully decline. It is important to recognise the units of measurements used – i.e. individuals, families, households, etc., as these will determine the response. If family or household is used, then how many people make up a family? Likewise if household is used, how many people make up a household? The definition of ‘affected’ can be hard to define and will vary, but may include injured, displaced or those affected by the emergency and in need of some form of assistance (e.g. without shelter, food, water, etc).

Strategic or operational?

Strategic and operational.

Basemap, baseline or situational?

Situational.

When might it be produced?

As early as possible in the response, and should be updated routinely – particularly during the acute stages.

Intended audience

Everyone. Individual clusters and specialists will be interested in the affected numbers that relate to their specialist expertise (e.g. the water, sanitation and hygiene (WASH) cluster will be interested in the number of people without safe drinking water, the shelter cluster in the number of people with damaged or destroyed houses).

Influence on humanitarian decisions

The affected population figure will determine the type of response required, and is also one of the triggers for a response in the first place.

Methods

  • Try to use individual people as the unit of measurement rather than households or families, as this will remove any uncertainty around how many make up a family or household.

  • Use round figures – you can’t have a fraction of a person.

Data

  • National and local government

  • Ministry of Health

  • Local Emergency Management Agency (LEMA)

  • Office for the Coordination of Humanitarian Affairs (OCHA)

  • Humanitarian clusters

  • Humanitarian Data Exchange

Nepal - Earthquake emergency - Details of the affect on the population in Sindhupalchok (as at 7 May 2015)