Table 6.

the similarity ranking of health influencing factors

First-level indicators	Second-level indicators	Ranking	Total score of ranking
The lifestyle of the rural older adults	$C_1$ Balanced diet	9	(9 + 10 + 4 + 6 + 3)/5 = 6.4
	$C_2$ The quality of sleep	10
	$C_3$ Physical exercise	4
	$C_4$ Unhealthy lifestyle	6
	$C_5$ Mentality	3
The health management	$C_6$ Preventive medical service utilization	11	(8 + 11)/2 = 9.5
	$C_7$ Chronic disease management	8
Socio-economic status	$C_8$ Income	12	(12 + 2 + 1)/3 = 5
	$C_9$ Occupation	2
	$C_{10}$ Education	1
Living environment	$C_{11}$ Environmental pollution	7	(7 + 5)/2 = 6
	$C_{12}$ Intergenerational relationship	5