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Table 1 Multiple forward stepwise regression model of Culex larvae in relation to terrestrial vegetation and aquatic chemistry characteristics for early season (June-July) and late season (August-September) time windows

From: Terrestrial vegetation and aquatic chemistry influence larval mosquito abundance in catch basins, Chicago, USA

Parameter Coefficient Standard Error Std. Coefficient T P
Early season (June-July)
Ammonia 5.51 1.33 0.49 4.16 <0.001*
Late season (August-September)
Ammonia 25.25 8.55 0.37 2.96 0.005*
pH −14.74 8.60 −0.21 −1.71 0.093
Nitrate 16.43 8.61 0.26 1.91 0.062
Flowering shrubs −1.40 0.70 −0.36 −2.01 0.050*
Shrubs height <1 m 0.67 0.46 0.29 1.45 0.152
Deciduous trees 1.69 1.41 0.14 1.19 0.238
  1. *Indicates a statistically significant result, α = 0.05.
  2. †Indicates a marginally significant result, α = 0.20.