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Table 1 Study population and sample size for entomological and parasitological surveys by study areas.

From: Community-wide benefits of targeted indoor residual spray for malaria control in the Western Kenya Highland

  Intervention Nonintervention Buffer areas
Valley Uphill Valley Uphill
Approximate population 2800 8800 2200 7400 10800
Mosquito survey: Mean number of houses sampled per survey 24 79 29 65 103
Monthly parasite survey: Mean number of children sampled per survey 45 75 48 134 84
Cohort study: Mean number of children sampled per survey 113 154 112 249 321
  1. Buffer areas include all buffer areas.