Term

coefficient

T value

P-value

Constant

24.800

35.57

0.000

Linear

Amount of porogen

−0.062

−0.15

0.889*

Size of porogen

2.975

6.97

0.001

Amount of binder

1.687

3.95

0.011

Quadratic

Amount of porogen * Amount of porogen

−6.150

−9.79

0.000

Size of porogen * Size of porogen

−4.525

−7.20

0.001

Amount of binder * Amount of binder

−0.020

−0.08

0.940*

Interactions

Amount of porogen * Size of porogen

−1.225

−2.03

0.098*

Amount of porogen * Amount of binder

2.100

3.48

0.018

Size of porogen * Amount of binder

−0.925

−1.53

0.186