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Table 3 Generalized linear model output for vector competence and parasite dynamics

From: Capacity of mosquitoes to transmit malaria depends on larval environment

 

Oocyst prevalence(n = 417)

Sporozoite prevalence(n = 239)

Oocyst intensity(n = 316)

Plasmodium genomes per midgut(n = 316)

Factors

WaldX2

d.f.

p - value

WaldX2

d.f.

p - value

WaldX2

d.f.

p - value

WaldX2

d.f.

p - value

Intercept

104.07

1

<0.001

35.91

1

<0.001

2535.06

1

<0.001

14425.51

1

<0.001

Treatment

1.93

1

0.164

0.01

1

0.944

76.61

1

<0.001

43.42

1

<0.001

Replicate(treatment)

5.57

6

0.473

9.04

6

0.171

20.79

6

0.002

2.20

6

0.900

Block

35.91

1

<0.001

12.20

1

<0.001

79.3

1

<0.001

74.68

1

<0.001

Intensity

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

114.83

1

<0.001

Treatment x block

N.S.

N.S.

N.S.

N.S.

N.S.

N.S.

33.79

7

<0.001

7.18

1

<0.001

Treatment x intensity

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

16.15

1

<0.001

Block x intensity

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

N.A.

35.96

1

<0.001

  1. Bold indicates significance at α = 0.05. (Model fit assessed by value of deviance per degrees of freedom: oocyst prevalence = 1.379, sporozoite prevalence = 1.748, oocyst intensity = 1.422, genomes per midgut = 1.286).
  2. P-values are reported only for significant interactions and first order terms. Table reflects the final output of a backwards-eliminated full factorial model. Intensity is included as a covariate only for Plasmodium genomes, as it would be an inappropriate variable for all other parasite traits reported in this table. N.S. = not significtant, N.A. = not applicable.