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Table 3 IRR Results - Fixed-effects Negative Binomial (NB) regression model to assess mortality due to malnutrition in children under 5 years old

From: Combination of conditional cash transfer program and environmental health interventions reduces child mortality: an ecological study of Brazilian municipalities

  NB regression model without zero inflation NB regression model with zero inflation
IRRa (CI-95%) p-value IRRa (CI-95%) p-value
Bolsa Família Program (PBF) total 1.022 (1.018–1.026) < 2e-16 1.016 (1.011–1.021) 6.04e-11
Literacy population 15 years or older 0.984 (0.978–0.991) 2.71e-06 0.987 (0.980–0.993) 7.54e-05
Population 0.949 (0.912–0.989) 0.00977 0.882 (0.841–0.926) 4.17e-07
Northeast Region 0.512 (0.450–0.584) < 2e-16 0.485 (0.416–0.564) < 2e-16
Midwest Region 1.038 (0.855–1.260) 0.70382 1.975 (1.443–2.702) 2.11e-05
Southeast Region 0.383 (0.322–0.456) < 2e-16 0.342 (0.273–0.427) < 2e-16
South Region 0.381 (0.303–0.476) < 2e-16 0.334 (0.239–0.466) 1.24e-10
Year 2007 0.932 (0.797–1.091) 0.38650 0.908 (0.775–1.063) 0.22289
Year 2008 0.762 (0.644–0.901) 0.00157 0.744 (0.628–0.880) 0.00056
Year 2009 0.670 (0.564–0.794) 4.35e-06 0.657 (0.554–0.780) 1.64e-06
Year 2010 0.571 (0.478–0.681) 6.91e-10 0.561 (0.469–0.671) 2.13e-10
Year 2011 0.566 (0.468–0.683) 4.09e-09 0.560 (0.463–0.677) 2.14e-09
Year 2012 0.452 (0.370–0.551) 6.52e-15 0.444 (0.364–0.543) 2.01e-15
Year 2013 0.454 (0.372–0.552) 4.28e-15 0.457 (0.375–0.557) 8.29e-15
Year 2014 0.440 (0.360–0.535) 3.69e-16 0.438 (0.359–0.534) 3.71e-16
Year 2015 0.408 (0.332–0.499) < 2e-16 0.403 (0.328–0.494) < 2e-16
Year 2016 0.373 (0.302–0.459) < 2e-16 0.378 (0.306–0.466) < 2e-16
  1. Model without zero inflation: AIC: 15248. BIC: 15429.37. 2 x loglik: - 15,210,437. Zero inflation model: AIC: 15190. BIC: 15420. 2 x log-lik: - 15,134
  2. The comparison references of the models refer to the regions: North region and for the year: 2006
  3. aRatio for incidence rates