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Table 4 Multivariate analysis of the prevalence rates of Plasmodium falciparum asymptomatic infection determined by cross-sectional survey

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

 

N

Positive thick blood smear

Prevalence rate (95% CI)

Unadjusted odds-ratio (95% CI)

p-values

Adjusted odds-ratio (95% CI)

p-values

Agro-ecosystem

0.358

 

0.081

R0

8,189

3,940

48.1 (44.8–51.4)

1.00

 

1.00

 

R1

11,020

4,952

44.9 (41.7–48.2)

0.88 (0.73–1.06)

0.166

0.79 (0.64–0.97)

0.025

R2

10,121

4,772

47.1 (45.6–48.7)

0.96 (0.83–1.11)

0.583

0.85 (0.73–1.00)

0.053

Age group (years)

<0.0001

 

<0.0001

0–1

1,165

890

76.4 (73.5–79.3)

1.00

 

1

 

2–4

3,068

2,375

77.4 (75.5–79.3)

1.06 (0.88–1.27)

0.525

1.06 (0.88–1.27)

0.518

5–9

5,268

3,345

63.5 (61.6–65.4)

0.54 (0.45–0.65)

<0.0001

0.54 (0.45–0.65)

<0.0001

10–19

5,773

2,662

46.1 (43.7–48.6)

0.26 (0.22–0.32)

<0.0001

0.26 (0.22–0.32)

<0.0001

20–39

7,608

2,486

32.7 (30.6–34.7)

0.15 (0.12–0.18)

<0.0001

0.15 (0.12–0.18)

<0.0001

> = 40

6,448

1,906

29.6 (27.5–31.6)

0.13 (0.11–0.16)

<0.0001

0.13 (0.10–0.16)

<0.0001

Season

0.741

 

0.705

Dry

10,537

4,883

46.3 (44.9–48.4)

1.00

 

1.00

 

Wet

18,793

8,781

46.7 (44.7–48.8)

1.01 (0.92–1.11)

0.741

1.02 (0.92–1.13)

0.705