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Note that guidance regarding the ideal cell size of gridded population sample frames is not yet available.
Perhaps the most ideal gridded population sample frame would group grid cells into "sensible" potential PSUs of similar population size before first-stage sampling.
Generation of a sensible gridded population sample frame has only recently become possible as new techniques are developed to estimate population characteristics, such as poverty-level or disease status, in a gridded population format [54, 61].
If a gridded population sample frame of sensible potential PSUs existed, the survey practitioner would sample units with probability proportionate to estimated size, and calculate typical sampling inclusion probability weights.
Gridded population sample frames may also be used in lieu of census data for surveys that need to be representative of both population and of space, and where PSUs of a specific population size are needed.
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