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Table 2 Multivariate analysis of risk factors for anaemia, malaria anaemia and severe malarial anaemia

From: Impact of Plasmodium falciparum infection on the frequency of moderate to severe anaemia in children below 10 years of age in Gabon

  Anaemia Malarial anaemia Severe malarial anaemia
  aOR [95% CI] P aOR [95% CI] P aOR [95% CI] P
Age (months)          
< 1 NDa    ND    ND   
1–5 1.00    2.55 [1.17–5.55] 0.014 8.55 [4.04–18.09] <0.001
6–11 2.83 [1.22–6.56] 0.015 3.95 [2.41–6.49] 0.002 6.26 [4.12–9.49] <0.001
12–23 3.45 [1.74–8.39] 0.001 4.27 [2.91–6.22] <0.001 4.40 [3.26–5.88] <0.001
24–35 3.15 [1.59–7.47] 0.001 4.04 [2.72–5.99] <0.001 2.83 [1.86–4.33] <0.001
36–47 2.16 [0.98–4.75] 0.056 3.63 [2.39–5.52] <0.001 1.79 [1.10–2.89] 0.017
48–59 2.67 [1.20–5.95] 0.016 3.64 [2.22–5.80] <0.001 0.89 [0.49–1.62] NS
60–71 2.23 [0.98–5.07] NS 2.64 [0.66–3.80] NS 0.84 [0.41–1.73] NS
72–83 2.21 [0.94–5.13] NS 1.97 [0.65–3.30] NS 0.83 [0.23–2.88] NS
84–95 0.96 [0.36–2.58] NS 1.29 [0.77–2.17] NS 0.22 [0.03–1.87] NS
96–107 0.80 [0.27–2.31] NS 0.81 [0.30–2.67] NS 0.44 [0.09–2.27] NS
108–119 1.93 [0.81–4.57] NS 1.13 [0.57–2.63] NS 0.90 [0.41–1.98] NS
Parasitaemia     NDb      
0 1.37 [1.11–2.28] <0.001     1.00   
[0–1000] 1.75 [1.27–2.43] <0.001     1.38 [0.92–2.08] NS
[1000–10000] 2.20 [1.71–2.84] <0.001     2.60 [2.07–3.26] <0.001
[10000–100000] 2.04 [1.62–2.60] <0.001     2.54 [2.07–3.13] <0.001
[100000–250000] 2.70 [1.86–3.88] <0.001     2.79 [2.03–3.83] <0.001
≥ 250000 3.54 [2.43–5.17] <0.001     4.96 [3.73–6.59] <0.001
  1. a: not significant b: not determined