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Table 2 The number of clinical malaria cases, child-years of follow up and clinical incidence rates by focal area

From: Fine-scale spatial and temporal variation of clinical malaria incidence and associated factors in children in rural Malawi: a longitudinal study

 

Focal area A (N = 106)

Focal area B (N = 96)

Focal area C (N = 80)

Total

Total clinical malaria cases

72

179

58

309

Total follow up child-years

103.3

88.8

75.7

267.8

Total child-years at riska

100.5

81.9

73.5

255.9

Clinical malaria incidence rate: per child-years at risk

0.7

2.2

0.8

1.2

Children with at least one clinical malaria case: n (%)

44 (41.5)

75 (78.1)

42 (52.5)

161 (57.1)

 One clinical malaria case: n (%)

26 (24.5)

23 (24.0)

29 (36.3)

78 (27.7)

 2–3 clinical malaria cases: n (%)

16 (15.1)

36 (37.5)

13 (16.3)

65 (23.1)

 4 or more clinical malaria cases: n (%)

2 (1.9)

16 (16.7)

0

18 (6.4)

  1. aCalculated from subtracting 14 days from total child-years for each malaria case; child-years at risk also includes the period of follow-up of children who did not complete 12 months