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Table 2 Polynomial regression model of autumn snail density over flooding duration of the current year

From: Three Gorges Dam: polynomial regression modeling of water level and the density of schistosome-transmitting snails Oncomelania hupensis

Term Estimate SE P-value
Intercept -2.456 0.564 0.001
\( {t}_1^2 \) 8.733 × 10-4 2.809 × 10-4 0.010
\( {t}_1^3 \) -4.180 × 10-6 1.980 × 10-6 0.060
Model evaluation
aR 2 0.774   
F-statistic 22.260   < 0.001
  1. Abbreviation: SE standard error