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Table 4 Statistical analysis of model terms by multiple regression analysis

From: Optimization of an efficient solid-phase enrichment medium for Salmonella detection using response surface methodology

Term Y1 Y2
CE SE P-value CE SE P-value
Intercept 97.35 2.86 0.0002 98.18 2.16 < 0.001
X1 10.77 1.90 0.0002 11.03 1.43 < 0.0001
X2 9.22 1.90 0.0007 8.89 1.43 < 0.0001
X3 6.31 1.90 0.0076 6.37 1.43 < 0.0012
X1X2 − 0.84 2.48 0.7408 − 2.50 1.87 0.2110
X1X3 1.01 2.48 0.6928 0.63 1.87 0.7452
X2X3 − 2.70 2.48 0.3018 − 3.75 1.87 0.0728
\({\text{X}}_{1}^{2}\) − 11.67 1.85 < 0.0001 − 11.66 1.39 < 0.0001
\({\text{X}}_{2}^{2}\) − 7.09 1.85 0.0033 − 8.57 1.39 0.0001
\({\text{X}}_{3}^{2}\) − 5.78 1.85 0.0107 − 5.48 1.39 0.0028
  1. Y1 mode 1 (the nine type strains), Y2 mode 2 (the 40 different local strains), CE coefficient estimate, SE Squares for Error