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Table 1 Socio-demographic features of patients in the study population

From: Exploring association between MBL2 gene polymorphisms and the occurrence of clinical blackwater fever through a case–control study in Congolese children

 

Case (n = 43)

Control (n = 86)

Total (n = 129)

OR (IC 95%)

p

Distribution for age

 ≤ 5 years

8 (18.6)

20 (23.3)

28 (21.7)

1

 

 > 5 years

35 (81.4)

66 (76.7)

101 (78.3)

1.33 (0.53–3.32)

0.676

Sex (%)

 Male

21 (48.8)

40 (46.7)

61 (47.3)

1.10 (0.53–2.28)

0.803

 Female

22 (51.2)

46 (53.5)

68 (52.7)

1

 

Season

 Rainy

38 (88.4)

51 (59.3)

89 (69.0)

5.22 (1.87–14.56)

< 0.001

 Dry

5 (11.6)

35 (40.7)

40 (31.0)

1

 

Plasmodium

 Falciparum

37 (86.0)

73 (84.9)

110 (85.3)

1.10 (0.39–3.12)

0.860

 Falciparummalariae

6 (14.0)

13 (15.1)

19 (14.7)

1

 

Parasitaemia (parasites/µl)

 Low (< 1000 tropho/µl)

33 (76.7)

43 (51.8)

76 (61.3)

3.31 (1.41–7.78)

0.005

 High (≥ 1000 tropho/µl)

10 (23.2)

40 (48.2)

48 (38.7)

1