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Table 4 IRR Results - Fixed-effects Negative Binomial (NB) regression model to assess mortality due to diarrhea 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) target

  ≥ 90% ≤ 99.9% (category 1)

0.7058 (0.5427–0.9113) 0.007981

0.7363 (0.5591–0.9695) 0.029240

 100% (category 2)

0.8203 (0.6562–1.0248) 0.080057

0.9039 (0.7165–1.1404) 0.394133

 Bolsa Família Program (PBF) total

1.0220 (1.0118–1.0322) 1.71e-05

1.0218 (1.0117–1.0320) 2.20e-05

Environmental Health

 Access to water

   > 60% ≤ 85% (category 1)

0.6235 (0.4666–0.8399) 0.001897

0.6267 (0.4678–0.8396) 0.001737

   > 85% ≤ 100% (category 2)

0.5779 (0.4048–0.8221) 0.002627

0.5946 (0.4189–0.8440) 0.003624

 Access to sanitation

   ≥ 20 < 50% (category 1)

0.7927 (0.6330–0.9894) 0.040499

0.7579 (0.5912–0.9716) 0.028718

   ≥ 50 < 100% (category 2)

0.8501 (0.6317–1.1416) 0.277095

0.7152 (0.5106–1.0017) 0.051177

  Solid waste collection

0.9901 (0.9812–0.9991) 0.030414

0.9902 (0.9812–0.9993) 0.035712

Family Health Strategy (FHS)

0.9980 (0.9946–1.0014) 0.237284

0.9952 (0.9915–0.9989) 0.011344

Literacy population 15 years or older

0.9783 (0.9655–0.9914) 0.001163

0.9711 (0.9574–0.9850) 5.32e-05

Per capita income

0.7943 (0.5924–1.0666) 0.118250

0.6342 (0.4582–0.8776) 0.006007

Urbanization rate

1.0159 (1.0072–1.0248) 0.000319

1.0266 (1.0164–1.0369) 2.42e-07

Northeast Region

0.3916 (0.3021–0.5094) 2.39e-12

0.4428 (0.3367–0.5824) 5.69e-09

Midwest Region

1.0266 (0.6933–1.5124) 0.892349

3.0768 (1.7230–5.4945) 0.000145

Southeast Region

0.4497 (0.3134–0.6450) 9.49e-06

0.4999 (0.3439–0.7269) 0.000283

South Region

0.7451 (0.4937–1.1185) 0.150701

0.8881 (0.5809–1.3575) 0.583517

Year 2007

0.8551 (0.6222–1.1728) 0.331941

0.8528 (0.6228–1.1676) 0.320511

Year 2008

0.9136 (0.6650–1.2534) 0.576897

0.8999 (0.6569–1.2326) 0.511081

Year 2009

0.6731 (0.4747–0.9489) 0.024212

0.6729 (0.4768–0.9498) 0.024283

Year 2010

0.7823 (0.5401–1.1289) 0.190924

0.8082 (0.5603–1.1658) 0.254591

Year 2011

0.7859 (0.5405–1.1362) 0.197112

0.7646 (0.5280–1.1073) 0.155411

Year 2012

0.5942 (0.3984–0.8779) 0.009309

0.5859 (0.3952–0.8686) 0.007778

Year 2013

0.5577 (0.3712–0.8294) 0.004322

0.5424 (0.3628–0.8110) 0.002877

Year 2014

0.5122 (0.3356–0.7714) 0.001381

0.5077 (0.3353–0.7690) 0.001372

Year 2015

0.5507 (0.3610–0.8289) 0.004266

0.5439 (0.3588–0.8247) 0.004133

Year 2016

0.5837 (0.3862–0.8735) 0.009270

0.5719 (0.3798–0.8611) 0.007449

  1. Model without zero inflation: AIC: 5772.70. BIC: 6012.05. 2 x loglik: - 5716,685. Zero inflation model: AIC: 5746.00. BIC: 6105.05. 2 x loglik: - 5662.0
  2. The comparison references of the models refer to the target PBF: < 90% (category 0); access to water: ≤ 60% (category 0); sanitation: < 20% (category 0); regions: North region and for the year: 2006
  3. aRatio for incidence rates