Research Article

High Tuberculosis Disease Burden among Indigenous People of the Paraguayan Chaco and Associated Community Characteristics, 2002–2004: An Ecological Study

Table 3

Models of associations between community characteristics and number of adults and pediatric TB cases in indigenous communities of the Chaco from 2002 to 2004, offset by population.

VariableNegative binomial adult modelPoisson pediatric model
Unadjusted
risk ratio
(95% CI)
Adjusted
risk ratio
(95% CI)
Adjusted 
value
Unadjusted
risk ratio
(95% CI)
Adjusted
risk ratio
(95% CI)
Adjusted 
value

Crowding1.06 (0.87–1.28)1.11 (0.90–1.37)0.340.86 (0.69–1.06)0.84 (0.65–1.08)0.19

Health post1.49 (0.91–2.45)2.07 (1.14–3.83)0.020.81 (0.52–1.31)1.15 (0.63–2.19)0.65

House type0.99 (0.99–1.00)0.99 (0.99–1.00)0.240.99 (0.99–1.00)1.00 (0.99–1.01)0.84

Land ownership1.57 (0.93–2.63)1.15 (0.63–2.11)0.631.07 (0.65–1.86)1.00 (0.55–1.88)1.00

Nonindigenous0.80 (0.48–1.36)0.56 (0.30–1.03)0.060.49 (0.29–0.81)0.64 (0.34–1.14)0.14

Remoteness1.11 (0.95–1.30)1.06 (0.88–1.27)0.531.20 (1.06–1.37)1.03 (0.87–1.22)0.72

Wage labour0.99 (0.98–1.00)1.00 (0.99–1.01)0.950.99 (0.98–1.01)1.00 (0.99–1.02)0.44

Water source1.00 (1.00–1.01)1.00 (1.00–1.01)0.521.01 (1.00–1.01)1.00 (1.00–1.01)0.17

Years of study0.88 (0.66–1.17)0.88 (0.64–1.21)0.410.50 (0.39–0.65)0.53 (0.38–0.73)<0.001

Model fitTheta = 1.19, AIC = 420.27AIC = 219.52
Residual deviance 104.79 on 94 dfResidual deviance 106.71 on 94 df
Goodness-of-fit test for Poisson assumption Goodness-of-fit test for Poisson assumption
= 104.79, = 106.71,  

The reference category for binary variables is the absence of the trait.