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Disaggregation by setting (urban, rural), sex and age, socioeconomic status, religion, ethnicity, etc. is less frequent but often required.
Aggregation Rules for the Bottom-Up Approach
Careful attention should be given when aggregating population figures across sectors, geographical area or affected groups. There are several aggregation rules that should be followed to avoid overlap and double counting to produce a best estimate of the overall, inter-sectoral number of People in Need.
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