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Table 5 Results of comparisons between the author-defined rural/urban assignment of Pf PR survey sites and the rural/urban assignment of the same sites by three global urban maps

From: Human population, urban settlement patterns and their impact on Plasmodium falciparum malaria endemicity

   Producer's accuracy User's accuracy  
Urban Map Overall Percentage Correct Rural Urban Rural Urban Kappa
AVHRR 83.62% 100% 10% 83% 100% 0.156
VMAP0 79.94% 99% 7% 80% 75% 0.093
MODIS 82.43% 92% 18% 84% 61% 0.206
GUERRA 86.74% 99% 32% 87% 88% 0.408
GRUMP-UE 89.14% 95% 65% 92% 73% 0.621
Edited GRUMP-UE 87.31% 99% 34% 87% 93% 0.439
HAY-GPW-U 87.24% 98% 35% 88% 83% 0.437
HAY-GPW-U-PU 80.29% 87% 49% 89% 45% 0.347
HAY-GRUMP-U 87.33% 95% 57% 90% 72% 0.561
HAY-GRUMP-U-PU 80.29% 87% 49% 89% 45% 0.347
  1. The producer's accuracies show, of those defined by the authors as urban/rural, the percentage classified correctly, while the consumer's accuracies show, of those classified as urban/rural by the global map in question, the percentage of surveys classified correctly. The kappa statistic compares agreement between each map and the author-defined definitions against that which may be expected by chance, with values ranging from 1 (perfect agreement) to 0 (no different from chance agreement) to -1 (perfect disagreement).