Table 8 The mediating effect of the five dimensions of IC between balance indicators and falls.

	Total effect c	a	b	Mediating effect a*b	95% BootCI	Mediation
MVL = > SPPB = > Falls	− 0.061	0.412	− 0.047	− 0.019	− 0.073 to − 0.001	Yes
MXE = > SPPB = > Falls	0.002	0.052	− 0.047	− 0.002	− 0.124 to − 0.003	Yes
MVL = > MNA-SF = > Falls	− 0.061	0.409	− 0.046	− 0.019	− 0.066 to − 0.002	Yes
SOM = > SAS = > Falls	0.000	− 0.323	0.012	− 0.003	− 0.075 to − 0.004	Yes
VIS = > SAS = > Falls	− 0.004	− 0.108	0.012	− 0.002	− 0.100 to − 0.009	Yes
SOM = > SDS = > Falls	0.000	− 0.377	0.008	− 0.003	− 0.061 to − 0.002	Yes
EPE = > SDS = > Falls	− 0.003	− 0.019	0.008	− 0.002	− 0.077 to − 0.002	Yes

SPPB short physical performance battery, MNA-SF mini nutritional assessment short form, SAS self-rating anxiety scale, SDS self-rating depression scale, SOM somatosensory, VIS vision, Vest vestibular, MVL movement velocity, EPE endpoint excursion.

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