Table 2 Stepwise linear regression analysis between tube length (dependent variable) and aquatic physicochemical parameters (independent variables).

From: Tube length of chironomid larvae as an indicator for dissolved oxygen in water bodies

Model

Standardized coefficients (β)

Standard error (SE)

p-value

IV

Constant

27.291

0.667

< 0.001

DO

− 2.779

0.087

< 0.001

W TEMP

− 0.215

0.014

< 0.001

F CO2

0.028

0.006

< 0.001

Nitrate

− 1.259

0.373

< 0.001

R2

0.996

VI

(Constant)

8.029

0.841

< 0.001

DO

− 2.044

0.195

< 0.001

F CO2

0.41

0.01

< 0.001

TH

0.051

0.011321

< 0.001

Iron

− 1.296

0.511

< 0.001

R2

0.986

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