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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)