. Author manuscript; available in PMC: 2020 May 26.

Published in final edited form as: Dent Mater. 2014 Jun 14;30(8):884–890. doi: 10.1016/j.dental.2014.05.026

Table 4.

The parameters of a general log-linear model after fitting data for fatigue lifetimes of polished specimens as a function of loading frequency (α₁ term), peak stress (α₂ term), and their interaction (α₃ term).

Coefficient	Value
α₀	90.0 (48.0, 146)^*
α₁	−3.16 (−15.1, 6.30)^*
α₂	−21.2 (−34.9, −9.73)^*
α₃	0.820 (−1.59, 4.02)^*

95% confidence interval