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Table 4 Univariate and multivariable analysis of risk factors associated with anaemia in children between 6 and 59 months of age Kinshasa, stratified by malaria transmission zone, 2011

From: Identifying risk factors for Plasmodium infection and anaemia in Kinshasa, Democratic Republic of Congo

Variable <10 % >10 % Interaction by transmission zone
n (%) Univariate analysis Multivariate analysis n (%) Univariate analysis Multivariate analysis
OR 95 % CI p value OR 95 % CI p value OR 95 % CI p value OR 95 % CI p value p value
Sex
Male 521 55.5 1.0    1.0    1161 69.0 1.0    1.0    
Female 526 59.7 1.19 0.93–1.52 0.167 1.21 0.93–1.58 0.160 1142 66.5 0.89 0.75–1.07 0.210 0.93 0.77–1.12 0.355 0.064
Age (months)
6–35 445 73.0 1.0    1.0    957 80.6 1.0    1.0    
36–47 416 50.5 0.38 0.28–0.50   0.38 0.28–0.51   873 61.6 0.39 0.31–0.48   0.35 0.28–0.43   
48–59 186 36.6 0.21 0.15–0.31 <0.001 0.19 0.13–0.28 <0.001 473 53.3 0.28 0.22–0.35 < 0.001 0.23 0.18–0.29 <0.001 0.473
Education of the respondent
No education 24 70.8 1.0    1.0    220 75.0 1.0    1.0    
Primary 390 62.1 0.67 0.27–1.66   0.64 0.24–1.70   1135 69.4 0.76 0.54–1.05   0.83 0.58–1.20   
Secondary 471 57.7 0.56 0.23–1.38   0.57 0.21–1.50   740 64.9 0.62 0.44–0.86   0.78 0.53–1.15   
Superior and above 162 44.4 0.33 0.13–0.84 <0.001 0.35 0.13–0.99 0.037 208 61.5 0.53 0.35–0.81 0.004 0.80 0.49–1.31 0.629 0.412
Occupation of the respondent
Without occupation 720 60.7 1.0    1.0    1523 68.8 1.0    1.0    
Manual labourer 86 39.5 0.42 0.27–0.67   0.41 0.25–0.68   212 69.3 1.03 0.75–1.40   0.97 0.69–1.36   
Self–employed 104 60.6 1.00 0.65–1.52   1.03 0.65–1.63   275 65.1 0.85 0.64–1.11   0.77 0.58–1.03   0.010
Employed 137 50.4 0.66 0.46–0.95 <0.001 0.94 0.61–1.44 0.005 293 63.8 0.80 0.62–1.04 0.268 0.92 0.68–1.24 0.313  
Net use
No 446 57.2 1.0    1.0    1341 68.3 1.0    1.0    
Yes 595 57.5 1.01 0.79–1.30 0.922 0.91 0.70–1.20 0.515 962 67.0 0.94 0.79–1.13 0.524 1.09 0.90–1.32 0.512 0.653
Malaria infection
No 1017 57.3 1.0    1.0    1762 63.1 1.0    1.0    
Yes 30 66.7 1.49 0.69–3.21 0.302 2.01 0.89–4.51 0.078 540 83.1 2.89 2.26–3.69 <0.001 3.40 2.60–4.44 <0.001 0.119
Fever in the last 2 weeks
No 798 54.6 1.0    1.0    1744 65.0 1.0    1.0    
Yes 244 66.4 1.64 1.22–2.21 <0.001 1.30 0.93–1.80 0.197 559 76.4 1.74 1.40–2.17 < 0.001 1.32 1.04–1.67 0.039 0.755
Wealth tertile
Poorest 196 62.2 1.0    1.0    1176 72.9 1.0    1.0    
Middle 298 65.8 1.17 0.80–1.70 0.423 1.14 0.76–1.71   574 64.1 0.66 0.54–0.82 0.000 0.78 0.62–0.99   
Wealthiest 545 51.9 0.66 0.47–0.92 0.013 0.68 0.47–0.99 0.003 540 60.7 0.58 0.46–0.71 0.000 0.77 0.60–0.99 0.073 0.022