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Table 1 Haemoglobin levels in relation with age

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

Age (months) Na Mean Hb (SDb) g/dL Anaemia prevalencec n (%) Severe anaemia n (%) Moderate anaemia n (%) Mild anaemia n (%) Non anaemic n (%)
1–5 456 8.7 ± 2.4 387 (84.9) 39 (8.6) 97 (21.3) 251 (55.0) 69 (15.1)
6–11 1113 8.4 ± 2.5 957 (86.0) 135 (12.1) 285 (25.6) 537 (48.3) 156 (14.1)
12–23 1998 8.0 ± 2.5 1781 (89.1) 263 (13.2) 602 (30.1) 916 (45.8) 217 (10.9)
24–35 1378 8.4 ± 2.3 1212 (88.0) 116 (8.4) 435 (31.6) 661 (48.0) 166 (12.0)
36–47 878 8.5 ± 2.3 748 (85.2) 82 (9.4) 241 (27.4) 425 (48.4) 130 (14.8)
48–59 611 9.0 ± 2.4 496 (81.3) 47 (7.6) 144 (23.6) 306 (50.1) 114 (18.7)
60–71 441 9.0 ± 2.4 343 (77.8) 33 (7.5) 101 (22.9) 209 (47.4) 98 (22.2)
72–83 341 9.5 ± 2.2 249 (73.0) 11 (3.2) 66 (19.4) 172 (50.4) 93 (27.0)
84–95 295 9.7 ± 2.1 208 (70.5) 7 (2.4) 52 (17.6) 149 (50.5) 87 (28.8)
96–107 230 9.6 ± 2.2 171 (74.3) 8 (3.5) 38 (16.5) 125 (54.3) 59 (25.6)
108–119 428 9.7 ± 2.6 277 (64.7) 28 (6.5) 68 (15.9) 181 (42.3) 151 (35.3)
Total 8169 8.6 ± 2.5 6830 (83.6) 769 (9.4) 2129 (26.1) 3932 (48.1) 1339 (16.4)
  1. a: Number of patients; b Standard deviation; c Prevalence in the whole population