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Table 1 Odds Ratio of dengue fatal cases occurred in Brazil from 1987 to 2015, considering the first epidemic year (1986)

From: 30 years of fatal dengue cases in Brazil: a review

Year Reported cases Deaths OR over 1986 Confidence interval P value
1986 46,309 5
1987 88,407 4 0.419 0.11–1.56 0.2903
1988 1570 0 0.000 0–32.02 > 0.999
1989 5367 0 0.000 0–9.36 > 0.999
1990 40,279 8 1.840 0.60–5 0.4054
1991 104,399 0 0.040 0–0.73 0.0027
1992 1696 0 0.000 0–29.64 > 0.999
1993 7374 0 0.000 0–6.81 > 0.999
1994 56,691 11 1.797 0.62–5.17 0.3219
1995 137,308 2 0.135 0.02–0.69 0.0134
1996 183,762 1 0.050 0–0.43 0.0017
1997 249,239 9 0.334 0.11–0.99 0.055
1998 507,715 10 0.182 0.06–0.53 0.006
1999 74,670 42 5.210 2.06–13.17 < 0.0001
2000 135,228 4 0.274 0.07–1.02 0.053
2001 385,783 44 1.056 0.42–2.66 > 0.999
2002 696,472 150 1.995 0.82–4.86 0.1352
2003 274,975 88 2.964 1.20–7.29 0.0111
2004 70,174 18 2.376 0.88–6.39 0.0896
2005 147,039 69 4.346 1.75–10.77 0.0002
2006 258,680 142 5.084 2.08–12.40 < 0.0001
2007 496,923 290 5.405 2.23–13.08 < 0.0001
2008 632,680 561 8.212 3.40–19.81 < 0.0001
2009 406,269 341 7.774 3.21–18.80 < 0.0001
2010 1,011,548 656 6.006 2.49–14.48 < 0.0001
2011 764,032 482 5.843 2.42–14.10 < 0.0001
2012 589,591 327 5.137 2.12–12.42 < 0.0001
2013 1,470,487 674 4.245 1.76–10.23 0.0007
2014 591,080 475 7.443 3.08–17.97 < 0.0001
2015 1,649,008 986 5.538 2.30–13.34 < 0.0001
  1. Footnote: To compare the Odds Ratio of deaths occurred from 1987 to 2015, we calculated OR values, confidence intervals and P-values, setting the year of 1986 as the comparison year. Values were calculated using GraphPad Prism version 6 software