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Table 2 Significance of factors**

From: Factors influencing U.S. canine heartworm (Dirofilaria immitis) prevalence

Effect

Estimate

Standard error

Exp(β)

95% Wald CI

Intercept

-8.0610

0.0819

  

Temperature

0.0720

0.0011

1.075

(1.072, 1.077)

Median household income

-0.0227

0.0003

0.978

(0.977, 0.978)

Population density

-0.0175

0.0004

0.983

(0.982, 0.984)

Precipitation

0.0982

0.0049

1.103

(1.093, 1.114)

Elevation

-0.0605

0.0030

0.941

(0.936, 0.947)

Relative humidity

-0.0147

0.0008

0.985

(0.984, 0.987)

Forest coverage

1.2493

0.1156

3.448

(2.781, 4.375)

Surface water coverage

0.1054

0.0265

1.111

(1.055, 1.170)

Aedes trivittatus

0.9987

0.0153

2.715

(2.634, 2.797)

Culex quinquefasciatus

0.4063

0.0152

1.501

(1.457, 1.547)

Aedes sierrensis

0.6947

0.0293

2.003

(1.892, 2.121)

Anopheles punctipennis

0.4132

0.0182

1.512

(1.459, 1.567)

Anopheles quadrimaculatus

-0.1663

0.0185

0.847

(0.817, 0.878)

Aedes aegypti

-0.1232

0.0112

0.884

(0.865, 0.904)

Aedes canadensis

0.1481

0.0143

1.160

(1.128, 1.192)

Aedes albopictus

-0.0894

0.0112

0.915

(0.895, 0.935)

  1. **All factors are significant at level 0.01.