Associated factors of oral frailty in older adults with long-term T2DM duration of more than 10 years

BMC Geriatrics

Table 2 Hierarchical multiple linear regression of variables on oral frailty (n = 211)

Steps and predictor variables	Model 1		Model 2		Model 3		Model 4
Steps and predictor variables	β	P	β	P	β	P	β	P
Step 1
Age	0.115	0.069	0.114	0.056	0.091	0.122	0.038	0.505
Number of FNT	-0.471	< 0.001	-0.337	< 0.001	-0.317	< 0.001	-0.263	< 0.001
Step 2
Complete restoration			Ref.		Ref.		Ref.
Incomplete restoration			0.156	0.025	0.162	0.018	0.138	0.035
Abnormal restoration			0.187	0.001	0.197	0.001	0.173	0.002
Completely unrestored			0.037	0.048	0.010	0.089	-0.023	0.754
No need for restoration			-0.223	0.005	-0.220	0.005	-0.238	0.002
Step 3
FBG					0.138	0.014	0.131	0.014
HbA1c					0.087	0.122	0.066	0.216
Step 4
Cognitive impairment							0.255	< 0.001
R²	0.269		0.379		0.406		0.462
ΔR²	0.269		0.110		0.026		0.057
F/P	38.137/<0.001		20.683/<0.001		17.154/<0.001		19.101/<0.001

OFI-8: oral Frailty Index-8; FNTs: functional natural teeth; FBG: fasting blood glucose; HbA1c: glycated hemoglobin
β: standardized regression coefficient; R²: coefficient of determination; ΔR²: coefficient of determination change

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