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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