Table 3.

Coefficients, Standard Errors, and 95% Confidence Intervals for the Mediation Model for EF and EM Change

Variables	Direct effects		Path coefficients				Indirect effect for EF
	EF		PA		CA
	b(SE)	CI	b(SE)	CI	b(SE)	CI	b(SE)	CI
Age	−0.015***(0.004)	−0.017,−0.013	−0.016***(0.002)	−0.021, −0.011	0.007***(0.001)	0.005, 0.010
Sex (female)	−0.028(0.020)	−0.065,0.009	−0.092*(0.049)	−0.187, 0.004	0.057**(0.024)	0.006, 0.108
Race/ethnicity (white)	0.094***(0.038)	0.024,0.164	0.231**(0.092)	0.051, 0.411	0.115**(0.042)	0.019, 0.212
Education	0.012**(0.004)	0.004,0.020	0.065***(0.011)	0.043, 0.084	0.037***(0.005)	0.026, 0.048
Health	0.033***(0.011)	0.012,0.053	0.156*** (0.022)	0.103, 0.208	0.014(0.013)	−0.014, 0.042
PA	0.013*(0.008)	−0.002,0.029					0.001(0.001)	−0.001, 0.002
CA	0.033**(0.015)	0.003,0.062					0.001***(0.001)	0.001, 0.002
	EM		PA		CA		Indirect effect for EM
	b(SE)	CI	b(SE)	CI	b(SE)	CI	b(SE)	CI
Age	−0.014***(0.001)	−0.029,−0.008	−0.017***(0.002)	−0.018, −0.009	0.007***(0.001)	0.005, 0.010
Sex (female)	0.316***(0.042)	0.183,0.124	−0.153*(0.049)	−0.157, 0.0	0.057**(0.024)	0.006, 0.108
Race/ethnicity (white)	0.056***(0.075)	0.288,0.120	0.264**(0.092)	0.051, 0.411	0.115**(0.042)	0.019, 0.212
Education	0.023***(0.009)	0.009,0.036	0.052***(0.011)	0.043, 0.084	0.050***(0.005)	0.026, 0.048
Health	0.056***(0.019)	0.021,0.092	0.168*** (0.022)	0.103, 0.208	0.025(0.013)	−0.003, 0.053
PA	0.035**(0.011)	0.034,0.078					0.003***(0.001)	0.001, 0.005
CA	0.045*(0.019)	−0.159,0.233					0.002(0.001)	−0.001, 0.004

Notes. CA = cognitive activity; EF = executive function; EM = episodic memory; PA = physical activity.

*p < .1, **p < .05, ***p < .01.