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Table 8 Predictors for an infection with Ascaris lumbricoides of at least moderate intensity across all 19 extension study sentinel sites in Burundi combined with the intensity data obtained by a mapping survey in 2014 from 14 of those 19 schools. Results shown are from binomial mixed models based on n = 20,879 observations. Age had been mean centred and divided by the estimate of its standard deviation. The pseudo-R 2 values for this model were pseudo-R 2 MF = 0.195; R 2 marg. = 0.078, R 2 cond. = 0.662

From: The impact of an 8-year mass drug administration programme on prevalence, intensity and co-infections of soil-transmitted helminthiases in Burundi

Fixed effects Category Parameter Adjusted odds ratio (CI) P
(Intercept)   -5.92 (0.72) 0.0 (0–0.01) < 0.001
Year 2009 -2.27 (1.2) 0.1 (0.01–1.15) 0.065
  2011 -1.23 (0.74) 0.29 (0.07–1.25) 0.097
  2014 -0.46 (1.5) 0.63 (0.03–11.83) 0.759
Age   -0.21 (0.082) 0.81 (0.69–0.95) 0.009
Age^2   -0.11 (0.075) 0.89 (0.77–1.04) 0.137
Sex (male)   0.16 (0.15) 1.18 (0.88–1.58) 0.282
Random effects   Variance SD P
Pupil (Intercept)   0.40 0.63  
School (Intercept)   5.30 2.30  
Year 2009   1.50 1.20  
Year 2011   0.82 0.91  
Year 2014   6.80 2.60  
Random Slope Year     < 0.001