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Table 2 Prevalence of ABO blood group in different P. falciparum malaria clinical categories and healthy controls

From: Association of ABO blood group with severe falciparum malaria in adults: case control study and meta-analysis

Blood group SM (n = 247) UM (n = 106) HC (n = 174) SM vs UM P value, OR (95% CI) SM vs HC P value, OR (95% CI) UM vs HC P value, OR (95% CI)
O 63 (25) 52 (49) 74 (42) ref ref ref
A 48 (19) 20 (19) 36 (21) 0.04, 0.50 (0.26 to 0.95) 0.12, 0.63 (0.36 to 1.10) 0.51, 1.26 (0.65 to 2.42)
B 119 (49) 24 (23) 50 (29) <0.0001, 4.09 (2.30 to 7.25) <0.0001, 2.79 (1.74 to 4.47) 0.23, 1.46 (0.80 to 2.67)
AB 17 (7) 10 (9) 14 (8) 0.52, 0.71 (0.30 to 1.69) 0.42, 0.70 (0.32 to 1.53) 1.00, 0.98 (0.40 to 2.38)
Non O (A+B+AB) 184 (75) 54 (51) 100 (58) <0.0001, 2.81 (1.74 to 4.52) 0.0003, 2.16 (1.42 to 3.27) 0.32, 1.30 (0.80 to 2.11)
  1. NOTE: Data are no. (%) of participants unless otherwise specified.
  2. SM: severe malaria; UM: uncomplicated malaria; HC: healthy controls; OR: odds ratio; CI: confidence interval