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Table 4 Zero-inflated negative binomial regression output for the Kintampo data

From: Analysis of partial and complete protection in malaria cohort studies

Negative binomial component Logistic component
Incidence rate ratios (IRR) Odds ratio (OR) for not having malaria
  IRR (95% CI) p   OR (95% CI) p
Rural residence 1.64 (1.21, 2.20) 0.001 Rural residence 0.25 (0.10, 0.58) 0.001
Sex (female vs. male) 0.92 (0.79, 1.07) 0.259 -   
Distance from
health centre
     
(≥5 km vs. < 5 km) 0.92 (0.78, 1.08) 0.321 -   
Thatched roof 1.11 (0.93, 1.32) 0.25 Thatched roof 1.27 (0.51, 3.16) 0.612
SES    SES   
Least poor -   Least poor -  
Less poor 1.51 (1.01, 2.24) 0.044 Less poor 0.59 (0.23, 1.53) 0.276
Poor 1.71 (1.18, 2.49) 0.005 Poor 0.38 (0.14, 1.05) 0.063
More poor 1.68 (1.15, 2.46) 0.008 More poor 0.34 (0.11, 1.05) 0.062
Most poor 1.65 (1.14, 2.41) 0.009 Most poor 0.07 (0, 1.67) 0.101
Sibling antibody response category    Sibling antibody response category   
Low    Low   
Medium 1.03 (0.84, 1.26) 0.77 Medium 1.28 (0.57, 2.87) 0.549
High 1.13 (0.92, 1.38) 0.241 High 1.02 (0.43, 2.44) 0.964
Bed net use    Bed net use   
Low    Low   
Medium 1.07 (0.87, 1.32) 0.526 Medium 0.86 (0.37, 1.98) 0.723
High 1.17 (0.95, 1.45) 0.138 High 0.54 (0.19, 1.52) 0.244
  1. Table shows output from the zero-inflated negative binomial regression model. Incidence rate ratios are from the count component and odds ratios are from the logistic component.
  2. CI = confidence interval; SES = socio-economic status.