. Author manuscript; available in PMC: 2015 Nov 1.

Published in final edited form as: Am J Geriatr Psychiatry. 2013 Jul 23;22(11):1210–1221. doi: 10.1016/j.jagp.2013.04.002

Table 4.

Regression Models of Cardiac Measurement and Engagement in MSA on Executive Function (N = 419)^†

	Model 1			Model 2			Model 3
	B (SE)	t₍₄₀₆₎	p	B (SE)	t₍₄₀₅₎	p	B(SE)	t₍₄₀₄₎	p

Baseline cardiac activity	0.002 (0.01)	0.46	.646	0.003 (0.01)	0.74	.391	0.003 (0.01)	0.90	.369
HR	0.27 (0.14)	2.00	.047	0.29 (0.13)	2.24	.026	0.29 (0.13)	2.23	.026
MSA				−0.32 (0.04)	−7.21	<.001	−0.32 (0.04)	−7.19	<.001
MSA × HR							0.33 (0.14)	2.33	.020
	R² = 0.23, F_{(13, 406)} = 9.40, p < .001			R² = 0.32, F_{(14, 405)} = 13.53, p < .001			R² = 0.33, F_{(15, 404)} = 13.13, p < .001

	Model 1			Model 2			Model 3
	B(SE)	t₍₄₀₆₎	p	B(SE)	t₍₄₀₅₎	p	B(SE)	t₍₄₀₄₎	p

Baseline cardiac activity	−0.002 (0.04)	−0.04	.965	−0.01 (0.04)	−0.36	.717	−0.01 (0.04)	−0.36	.717
LF-HRV	−0.09 (0.05)	−2.00	.046	−0.06 (0.04)	−1.37	.173	−0.06 (0.04)	−1.35	.177
MSA				−0.31 (0.05)	−6.89	<.001	−0.31 (0.05)	−6.88	<.001
MSA × LF-HRV							0.004 (0.09)	0.10	.926
	R² = 0.23, F_{(13, 406)} = 5.35, p < .001			R² = 0.31, F_{(14, 405)} = 6.69, p < .001			R² = 0.31, F_{(15, 404)} = 6.25, p < .001

	Model 1			Model 2			Model 3
	B(SE)	t₍₄₀₆₎	p	B(SE)	t₍₄₀₅₎	p	B(SE)	t₍₄₀₄₎	p

Baseline cardiac activity	−0.02 (0.03)	−0.59	.555	−0.02 (0.03)	−0.72	.469	−0.02 (0.03)	−0.74	.457
HF-HRV	−0.05 (0.05)	−1.08	.281	−0.03 (0.05)	−0.73	.463	−0.04 (0.05)	−0.78	.438
MSA				−0.31 (0.04)	−7.05	<.001	−0.32 (0.05)	−7.15	<.001
MSA × HF-HRV							−0.07 (0.05)	−1.32	.187
	R² = 0.23, F_{(13, 406)} = 5.21, p < .001			R² = 0.31, F_{(14, 405)} = 6.66, p < .001			R² = 0.31, F_{(15, 404)} = 6.27, p < .001

Note. Controlled for age, gender, education, hypertension, diabetes, heart attack, regularly smoking, alcohol intake, perceived control, depressive symptoms, and interval between Projects 3 and 4.

^†

7 cases with missing MSA data and 61 cases with missing cardiac data were excluded from the analysis.