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Table 3 Analysis of the binomial probability distribution of anopheline- P . falciparum infection according to landscape or species or traps, Atlantic forest, Brazil, August-November 2012

From: Plasmodium falciparum in the southeastern Atlantic forest: a challenge to the bromeliad-malaria paradigm?

Landscape

Positive (k)

Tested (n)

Probability (P) a

1 – P (k = 0)

1-A

2

93

0.138

0.985

1-B

0

31

0.248

0.752c

1-C

0

1

0.956

0.044c

2

0

14

0.533

0.467c

3

1

111

0.035b

0.993

4

0

23

0.355

0.645c

5

18

207

0.003b

0.997

Species

Positive (k)

Tested (n)

Probability (P) a

1 – P (k = 0)

An. albitarsis

0

28

0.284

0.716c

An. bellator

0

9

0.667

0.333c

An. cruzii

18

260

0.018b

0.999

An. fluminensis

0

3

0.874

0.126c

An. galvaoi

1

48

0.255

0.885

An. mediopunctatus

0

42

0.151

0.849

An. strodei

1

73

0.126

0.963

An. triannulatus

1

17

0.364

0.535c

Traps

Positive (k)

Tested (n)

Probability (P) a

1 – P (k = 0)

CDC-LT

0

38

0.181

0.819

Shannon

21

442

0.083b

1

  1. aAn a priori probability of success (k/n) in each trial equals to 0.044, which was the overall prevalence of anopheline-P. falciparum infection obtained herein (21 /480), was assumed.
  2. bThis result was statistically significant (level of significance < 0.05).
  3. cThis result shows that the statistical power was low (<0.80).