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Table 4 Uni- and multivariable mixed effects logistic regression model for P. falciparum RDT positivity at visit 1

From: Reduction of malaria prevalence after introduction of artemisinin-combination-therapy in Mbeya Region, Tanzania: results from a cohort study with 6773 participants

Covariate N N-pos. %-pos. Univariable Multivariable
OR 95% CI p value OR 95% CI p value
Gender
 Femalea 3663 84 2.29 1.00 – to – – 1.00 – to – –
 Male 3106 82 2.64 1.14 (0.99 to 1.31) 0.0747 1.10 (0.95 to 1.26) 0.1929
Age at Srv1 (years)
 0– < 5a 1026 16 1.56 1.00 – to – – 1.00 – to – –
 5– < 10 1158 34 2.94 2.07 (1.35 to 3.17) 0.0009 2.05 (1.32 to 3.17) 0.0013
 10– < 20 1592 69 4.33 3.10 (2.20 to 4.37) < 0.0001 3.04 (2.14 to 4.32) < 0.0001
 20– < 40 1720 26 1.51 1.03 (0.49 to 2.18) 0.9356 1.06 (0.50 to 2.22) 0.8802
 ≥ 40 1273 21 1.65 1.09 (0.48 to 2.43) 0.8426 0.99 (0.42 to 2.32) 0.9808
Bed net owned
 Noa 5089 89 1.75 1.00 – to – – 1.00 – to – –
 Yes 1680 77 4.58 0.44 (0.22 to 0.92) 0.0281 0.56 (0.18 to 1.73) 0.3139
SES-score
 Per unit – – – 0.72 (0.64 to 0.81) < 0.0001 0.81 (0.65 to 1.00) 0.0515
NDVI
 Per 0.1 NDVI units – – – 2.20 (1.01 to 4.82) 0.0479 1.83 (0.81 to 4.17) 0.1490
  1. Using robust variance estimates and including site and household as random effects to adjust for clustering, N = 6769
  2. N number of observations, N-pos. number of positives, %-pos. percent positive, OR odds ratio, 95% CI 95% confidence interval
  3. a Reference stratum
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