. 2022 Oct 4;14:921518. doi: 10.3389/fnagi.2022.921518

TABLE 2.

Multiple linear regression analysis with WAIS-III-R indices as outcomes.

		Model 1^a		Model 2^b
		β (95% CI)	P-value	β (95% CI)	P-value
POI	Verbal intelligence	3.734 (2.078, 5.390)	<0.001^*	2.955 (1.275, 4.635)	0.001^*
	Physical activities	0.055 (−0.059, 0.170)	0.337	0.028 (−0.078, 0.135)	0.600
	Leisure activities	0.013 (−0.098, 0.124)	0.820	0.062 (−0.044, 0.169)	0.247
	Age	−		−1.160 (−1.737, −0.583)	<0.001
	Sex	−		0.978 (−4.193, 6.148)	0.708
	Level of education	−		3.438 (0.540, 6.335)	0.021
	a. R² = 0.217, F(3, 84) = 7.739, p = < 0.001 b. R² = 0.376, F(6, 81) = 8.141, p = < 0.001^*
WMI	Verbal intelligence	1.329 (0.702, 1.955)	<0.001^*	1.384 (0.690, 2.078)	<0.001^*
	Physical activities	−0.025 (−0.068, 0.018)	0.256	−0.020 (−0.064, 0.025)	0.380
	Leisure activities	−0.036 (−0.078, 0.006)	0.094	−0.045 (−0.089, −0.002)	0.043
	Age	−		0.211 (−0.028, 0.449)	0.083
	Sex	−		0.640 (−1.495, 2.776)	0.552
	Level of education	−		−0.268 (−1.465, 0.929)	0.657
	a. R² = 0.187, F(3, 84) = 6.461, p = 0.001 b. R² = 0.228, F(6, 81) = 3.980, p = 0.002^*
PSI	Verbal intelligence	3.907 (1.374, 6.441)	0.003^*	4.221 (1.892, 6.550)	0.001^*
	Physical activities	0.209 (0.034, 0.383)	0.020^*	0.126 (−0.022, 0.274)	0.093
	Leisure activities	−0.045 (−0.215, 0.124)	0.598	0.087 (−0.060, 0.234)	0.244
	Age	−		−2.456 (−3.256, −1.656)	<0.001
	Sex	−		−1.612 (−8.781, 5.558)	0.656
	Level of education	−		−0.531 (−4.549, 3.487)	0.793
	a: R² = 0.164, F(3, 84) = 5.476, p = 0.002 b: R² = 0.453, F(6, 81) = 11.175, p = < 0.001^*

POI, Perceptual Organization Index; WMI, Working Memory Index; PSI, Processing Speed Index; CI, confidence interval. *Significant at the Bonferroni corrected alpha level of 0.007.