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In gridded population sampling, the size and zone of grid cells are likely to influence sampling inclusion probabilities, especially when the first-stage sample is based on geographically large grid cells, and/or the population is heterogeneously distributed.
However, sample inclusion probabilities of PSUs and SSUs were sensitive to the size and zone of grid cells, which could have smoothed-out or emphasized population density depending on the distribution of the underlying population.
However, the correct calculation of sampling inclusion probability weights for the growth approach is unclear.
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.
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