. Author manuscript; available in PMC: 2021 Feb 1.

Published in final edited form as: Comput Stat Data Anal. 2019 Sep 3;142:106835. doi: 10.1016/j.csda.2019.106835

Table 1:

The estimate (Est.) of model parameters α, β, and the indirect effect (IE), as well as the 95% bootstrap confidence interval (CI) of PC3, which yields significant IE.

	PC3
	PCA		SPCA
	Est.	95% CI	Est.	95% CI
α	−0.376	(−0.592, −0.160)	−0.343	(−0.534, −0.151)
β	−0.235	(−0.365, −0.105)	−0.262	(−0.410, −0.115)
IE (αβ)	0.089	(0.020, 0.176)	0.090	(0.025, 0.178)