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Table 1 Scores according to criteria categories for epidemics classification

From: Dengue epidemic typology and risk factors for extensive epidemic in Amazonas state, Brazil, 2010–2011

Criterion Feature Definition Score
Duration (based on index α) Low Up to 3 epidemic months 1
Middle With 4 to 6 epidemic months 2
High Greater than 6 epidemic months. 3
Intensity (based on the ß index) Low Incidence rates in epidemic months less than 10 cases / 100 thousand inhabitants. 1
Middle Incidence rates in epidemic months between 10a and 100 cases / 100 thousand inhabitants. 2
High Incidence rates in epidemic months above 100b cases / 100 thousand inhabitants 3
Coverage (based on index Υ) Limited Up to 1/3 of the municipalities in the region presented epidemic months 1
Moderated From 1/3 and 2/3 of the municipalities in the region presented epidemic months 2
Wide Greater than 2/3 of the municipalities in the region had epidemic months 3
  1. a1st quartile of distribution of dengue incidence rates; b3th quartile of distribution of dengue incidence rates