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Table 3 Estimates of the negative binomial regression for P. vivax and P. falciparum parasite densities

From: High prevalence of very-low Plasmodium falciparum and Plasmodium vivax parasitaemia carriers in the Peruvian Amazon: insights into local and occupational mobility-related transmission

 

P.vivax

P. falciparum

Univariate

Multivariate

Univariate

Multivariate

Coeff

95% CI

p value

Coeff

95% CI

p value

Coeff

95% CI

p value

Coeff

95% CI

p value

Study area (Ref = Cahuide)

 Lupuna

− 1.19

(− 2.37: − 0.01)

0.048*

0.99

(− 1.18:3.16)

0.371

− 4.6

(− 7.17: − 2.03)

< 0.001*

0.49

(− 0.96:1.95)

0.509

Age groups (Ref = < 10 years)

 10–29.9

0.93

(− 0.59:2.46)

0.230

0.46

(− 1.31:2.24)

0.606

1.08

(− 2.47:4.64)

0.550

1.10

(− 2.06:4.26)

0.495

 ≥ 30

0.57

(− 0.91:2.05)

0.449

− 0.28

(− 2.58:2.03)

0.814

8.28

(4.79:11.78)

< 0.001*

1.90

(− 1.36:5.15)

0.254

Time in community (Ref = > 2 years)

 ≤ 2

1.67

(0.39:2.94)

0.010*

3.11

(1.50:4.71)

<0.001*

− 6.99

(− 9.66: − 4.32)

< 0.001*

− 0.68

(− 2.26:0.90)

0.401

Fever (Ref = No)

 Yes

2.94

(0.72:5.16)

0.009*

4.14

(1.12:7.17)

0.007*

7.55

(4.92:10.18)

< 0.001*

6.36

(4.28:8.43)

< 0.001*

Seropositivity to species-specific (Ref = No)

 Yes

8.40

(6.71:10.09)

<0.001*

− 0.46

(− 2.24:1.31)

0.608

8.61

(7.00:10.23)

< 0.001*

3.11

(1.66:4.56)

< 0.001*

  1. Negative binomial models
  2. Coeff Coefficient
  3. Wald test p value, * p < 0.05