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Table 3 Logistic regression for Anopheles darlingi larvae abundance in the Lacandon forest and Soconusco regions, Chiapas, México

From: Larval habitat characterization of Anopheles darlingi from its northernmost geographical distribution in Chiapas, Mexico

Variable

B

SE

df

Sig

OR

95 % CI for OR

Lower

Upper

Interception

−0.015

0.175

 

0.279

−0.087

−0.362

0.331

Water depth

  

2

0.110

   

 0–100

0.043

0.021

1

0.043

2.054

0.001

0.084

 101–300

0.000

0.000

1

0.934

65,535.000

0.000

65,536.000

 301–800

0.052

0.162

1

0.965

0.321

−0.269

0.373

 Turbidity

−0.68

0.072

1

0.347

−0.944

−0.211

0.075

Coverage

  

2

0.200

   

 0–30 %

−0.090

0.107

1

0.401

−0.843

−0.303

0.122

 31–60 %

0.000

0.000

1

0.690

65,535.000

26.000

65,546.000

 61–100 %

−0.082

0.150

1

0.530

−0.548

−0.379

0.215

Detritus

  

2

0.600

   

 Low

−0.384

0.142

1

0.008

−2.699

−0.666

−0.102

 Moderate

−0.080

0.115

1

0.486

−0.699

−0.308

0.147

 High

0.000

0.000

1

0.230

65,535.000

19,849.000

65,595.000

 Presence of algae

0.151

0.075

1

0.046

2.021

0.003

0.298

Intensity of light

  

2

0.079

   

 Light

0.000

0.000

1

0.580

65,535.000

18,679.000

65,538.000

 Light/shade

0.054

0.129

1

0.960

0.418

−0.202

0.310

 Shade

0.108

0.115

1

0.351

0.937

−0.120

0.336

Vegetation

  

2

0.550

   

 Emergent

0.236

0.138

1

0.123

1.704

−0.039

0.510

 Floating/submerged

0.000

0.000

1

0.583

65,535.000

1657.000

65,536.000

 None

0.216

0.094

1

0.890

2.304

0.030

0.403

Water current

  

2

0.000

   

 Stagnant

1.000

0.110

1

0.000

9.080

0.781

1.218

 Slow

0.096

0.081

1

0.236

1.192

−0.064

0.256

 High

0.000

0.000

1

0.260

65,535.000

1487.000

65,539.000

 Habitat stability

0.188

0.081

1

0.022

2.327

0.028

0.349

 Elevation

0.134

0.268

1

0.616

0.503

−0.396

0.665

Distance to nearest house

  

2

0.580

   

 0–2.66 km

0.085

0.140

1

0.545

0.607

−0.193

0.363

 2.67–5.89 km

0.121

0.161

1

0.456

0.748

−0.199

0.441

 5.90–12.1 km

0.000

0.000

1

0.630

65,535.000

5276.000

65,535.000

 Region

0.085

0.058

1

0.650

1.468

−0.030

0.199

Hydrological type

  

10

0.810

   

 Ditches

0.000

0.011

1

0.976

−0.030

−0.022

0.022

 Gravel pits

0.283

0.292

1

0.334

0.971

−0.296

0.863

 Ground pools

0.193

0.284

1

0.498

0.680

−0.371

0.757

 Irrigation canal

0.142

0.243

1

0.559

0.586

−0.339

0.624

 Lagoon

0.135

0.277

1

0.627

0.488

−0.415

0.686

 Marshes

0.159

0.241

1

0.505

0.669

−0.312

0.630

 Ponds

0.349

0.241

1

0.150

1.452

−0.128

0.827

 Rain puddles

0.140

0.318

1

0.660

0.441

−0.491

0.772

 River margins

−0.047

0.303

1

0.877

−0.156

−0.649

0.554

 River pools

0.140

0.337

1

0.678

0.417

−0.529

0.810

 Pools

0.000

0.000

1

0.690

65,535.000

527.000

65,535.000

 Streams

0.135

0.277

1

0.090

0.488

−0.415

0.686

  1. OR odds ratio, CI confidence interval, Sig significant, df degrees of freedom