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Table 1 Characteristics of malaria parasitaemia positive and negative children in a 1 year longitudinal cohort study

From: Malaria, helminths, co-infection and anaemia in a cohort of children from Mutengene, south western Cameroon

Parameter

Subclass

Malaria parasitaemia Status  % (n)

p value

Enrolment a

6 months b

12 monthsc

Pos

Neg

Pos

Neg

Pos

Neg

Age group (years)

<5

31.3 (21)

58.4 (178)

42.6 (23)

47.8 (108)

27.8 (10)

52.1 (138)

0.001a,*

0.492b

0.031c,*

5–10

68.7 (46)

41.6 (127)

57.4 (31)

52.2 (118)

72.2 (26)

47.9 (127)

% (n)

18 (67)

82 (305)

19.3 (54)

80.7(226)

12 (36)

88 (265)

Gender

Male

47.8 (32)

53.6 (164)

53.7 (29)

50.4 (114)

52.8 (19)

52.5 (139)

0.360a

0.625b

0.971c

Female

52.2 (35)

46.4 (142)

46.3 (25)

49.6 (112)

47.2 (17)

47.5 (126)

n

67

306

54

226

36

265

Anaemia status

Anaemic

73.1 (49)

71.1 (216)

79.2 (42)

55.7 (122)

69.4 (25)

40 (106)

0.733a

0.002b,*

0.001c,*

Non anaemic

26.9 (18)

28.9 (88)

20.8 (11)

44.3 (97)

30.6 (11)

60 (159)

n

67

304

53

219

36

265

Febrile

Yes

25.4 (17)

20 (61)

16.7 (9)

8.4 (19)

8.3 (3)

0 (0)

0.328a

0.069b

0.001c,*

No

74.6 (50)

80 (244)

83.3 (45)

91.6 (207)

91.7 (33)

100 (265)

n

67

305

54

226

36

265

Helminth status

Positive

18 (11)

20.2 (52)

3.7 (1)

11.8 (13)

0.698a

0.212b

Negative

82 (50)

79.8 (205)

96.3 (26)

88.2 (97)

n

61

257

27

110

 

P+ M+ (%)

P+ M− (%)

P− M− (%)

 
 

Classification of participants (Mean ± SEM)

 Age (years)

5.18 ± 0.38 (2.9)

5.55 ± 0.20 (12.8)

4.65 ± 0.08 (84.3)

<0.001§

 Haemoglobin (g/dl)

9.08 ± 0.34 (3.0)

9.93 ± 0.13 (12.9)

10.62 ± 0.05 (84.1)

<0.001§

 Mp density (/µl)

3.32 ± 0.16 (18.5)

2.91 ± 0.07 (81.5)

0.012§

  1. *Statistical significance determined by Chi square analysis
  2. §Statistical significance determined using the one-way analysis of variance
  3. aDifferences at enrolment; bdifferences at 6 months; cdifferences at 12 months
  4. P− M− mp negative and no clinical manifestation of malaria, P+ M− mp positive and no clinical manifestation of malaria, P+ M+ malaria cases (febrile, mp positive+ at least one sign of malaria)