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Table 3 Comparison of priority areas for treatment identified by the two analytical approaches: expert analysis and geostatistical analysis

From: The geographic distribution of onchocerciasis in the 20 participating countries of the African Programme for Onchocerciasis Control: (2) pre-control endemicity levels and estimated number infected

  High risk (expert analysis)  
Probability that nodule prevalence exceeds 20% (geostatistical analysis) Yes No Total
Surface 1000 km2 Population Surface 1000 km2 Population Surface 1000 km2 Population
(1000) % of total (1000) % of total (1000) % of total
> 0.9 1,440 35,447 98.0% 25 714 2.0% 1,465 36,161 100.0%
> 0.5 2,193 55,066 93.4% 152 3,877 6.6% 2,345 58,943 100.0%
> 0.1 2, 794 72, 479 80.4% 837 17, 682 19.6% 3,631 90,162 100.0%
Total surveyed area 3,180 83,972 35.4% 5,089 152,986 64.6% 8,270 236,959 100.0%