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Table 1 Polynomial regression model for spring snail density over flooding duration of the previous 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 -2.467 0.798 0.013
\( {t}_2^2 \) 9.846 × 10-4 3.959 × 10-4 0.035
\( {t}_2^3 \) -5.317 × 10-6 2.787 × 10-6 0.089
Model evaluation
aR2 0.610   
F-statistic 9.594   0.006
  1. Abbreviation: SE standard error