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Table 6 Incidence density of pathological episodes and malaria attacks according to age and agro-ecosystem

From: Inland valley rice production systems and malaria infection and disease in the forest region of western Côte d’Ivoire

 

Observation

Pathological episodes

Malaria episodes

Malaria fever in the standard population of 1000 persons

Age groups (years)

N

Person-day

N

Incidence per person-year (95% CI)

N

Attributable fraction (95% CI)

Incidence per person-year

Population (%)

Incidence per year (95% CI)

R0

0–1

390

1,532

66

15.7 (8.8–25.4)

55

22.5 (14.2–33.9)

5.4 (3.4–8.1)

7.4%

397 (358–438)

2–4

1,008

3,909

89

8.3 (3.5–15.8)

73

24.6 (15.8–36.3)

2.3 (1.5–3.4)

9.8%

225 (197–256)

5–9

1,443

5,243

43

3.0 (0.4–8.0)

32

9.1 (4.1–17.1)

0.6 (0.3–1.2)

17.5%

111 (91–133)

10–19

1,701

5,919

21

1.3 (0.0–5.6)

7

1.0 (0.0–5.6)

0.1 (0.0–0.3)

21.4%

13 (07–22)

20–39

2,180

7,901

59

2.7 (0.4–8.0)

31

4.7 (1.4–11.0)

0.2 (0.1–0.5)

19.9%

43 (31–58)

> = 40

2,849

10,469

56

2.0 (0.1–6.4)

27

4.8 (1.4–11.0)

0.2 (0.0–0.4)

24.0%

40 (29–54)

Total

9,571

34,973

334

3.5 (0.6–8.8)

225

66.7 (51.5–84.5)

0.7 (0.5–0.9)

100.0%

696 (645–750)

R1

0–1

572

2,301

123

19.5 (11.8–30.3)

106

43.0 (30.7–57.3)

6.8 (4.9–9.2)

7.4%

505 (461–551)

2–4

1,371

5,534

95

6.3 (2.2–13.1)

80

30.3 (20.2–42.8)

2.0 (1.3–2.8)

9.8%

196 (169–225)

5–9

2,245

8,558

74

3.2 (0.6–8.8)

39

10.9 (5.1–19.0)

0.5 (0.2–0.8)

17.5%

81 (64–101)

10–19

2,484

9,080

45

1.8 (0.1–6.4)

22

4.9 (1.4–11.0)

0.2 (0.1–0.4)

21.4%

42 (30–57)

20–39

3,468

12,713

67

1.9 (0.1–6.4)

23

3.6 (0.8–9.5)

0.1 (0.0–0.3)

19.9%

21 (13–31)

> = 40

2,320

8,816

46

1.9 (0.1–6.4)

14

0.7 (0.0–4.7)

0.0 (0.0–0.2)

24.0%

07 (03–14)

Total

12,460

47,002

450

3.6 (0.6–8.8)

284

93.4 (75.1–113.9)

0.7 (0.6–0.9)

100.0%

725 (673–780)

R2

0–1

566

2,441

92

13.8 (7.3–22.9)

80

31.1 (21.1–44.0)

4.7 (3.1–6.6)

7.4%

344 (309–382)

2–4

1,210

5,143

97

6.9 (2.5–13.7)

82

25.9 (16.6–37.5)

1.8 (1.2–2.7)

9.8%

180 (155–208)

5–9

2,260

8,999

58

2.4 (0.2–7.2)

33

11.0 (5.5–19.7)

0.4 (0.2–0.8)

17.5%

78 (62–97)

10–19

2,398

9,110

38

1.5 (0.1–6.4)

16

2.6 (0.4–8.0)

0.1 (0.0–0.3)

21.4%

22 (14–33)

20–39

3,000

11,561

52

1.6 (0.1–6.4)

21

2.7 (0.4–8.0)

0.1 (0.0–0.3)

19.9%

17 (10–27)

> = 40

2,213

8,693

32

1.3 (0.0–5.6)

15

0.9 (0.0–4.7)

0.0 (0.0–0.2)

24.0%

09 (04–17)

Total

11,647

45,947

369

2.9 (0.4–8.0)

247

74.2 (58.1–92.9)

0.6 (0.5–0.7)

100.0%

589 (542–639)