Effect of socioeconomic status on the physical and mental health of the elderly: the mediating effect of social participation

Table 6 Relative mediation effect of the variable ‘interact with friends’

X	c_i	a_ib	bootstrap 95% CI	\|a_ib/c_i\|	c_i	a_ib	bootstrap 95% CI	\|a_ib/c_i\|
education (ref: illiteracy)	Y=IADL				Y = MMSE
primary	0.97^***	0.24	(0.16,0.32)	24.74%	2.49^***	0.23	(0.16,0.31)	9.24%
junior	0.86^***	0.29	(0.16,0.44)	33.72%	2.50^***	0.28	(0.15,0.41)	11.20%
senior and above	1.10^***	0.13	(0,0.26)	–	2.80^***	0.12	(0.01,0.25)	4.29%

X independent variable, ref reference, c_i the relative total effects of every category in categorical variables on the dependent variable, a_ib the quantity of relative mediation effect, |a_ib/ c_i| the proportion of relative mediation effect, CI confidence interval
*p < .05, **p < .01, ***p < .001

ISSN: 1471-2458