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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