Table 1.

Comparison of oral frailty in elderly patients with periodontitis by different characteristics (n = 1306)

Item		No oral frailty group(n = 193)	oral frailty group(n = 1113)	x²	P
Age(Years)	60 ~ 70	142	751	4.977	0.083
	71 ~ 80	51	345
> 80	-	17
Gender	Male	103	636	0.954	0.329
	Female	90	477
Marital status	Married	193	13	-	0.236
	Single	-	1100
Residence	Urban	142	794	0.405	0.524
	Rural	51	319
Education level	Uneducated	8	51	2.073	0.722
	Primary school	82	465
	Junior high school	46	307
	Senior high school	36	171
	College or above	21	119
BMI	< 18.5	22	123	2.606	0.272
	18.5ཞ23.9	151	826
	≥ 24.0	20	164
Smoking Status	No(Including having quit smoking for 3 months or more)	126	465	36.683	< 0.001
	Yes	67	648
Alcohol Consumption	No(Including abstaining from alcohol for more than three months)	122	524	17.125	< 0.001
	Yes	71	589
Medical Expense Payment Methods	Self-payment	10	205	21.476	< 0.001
	Resident Medical Insurance	102	481
	Employee Medical Insurance	81	427
Periodontitis staging	Ⅰ	103	279	95.314	< 0.001
	Ⅱ	66	306
	Ⅲ and Ⅳ	24	528
Periodontitis duration	≤ 6 months	34	184	0.401	0.818
	7–12 months	85	517
	>12 months	74	412
Number of Chronic Diseases (types)	0	83	231	56.979	< 0.001
	1	55	278
	2	31	296
	≥ 3	24	308
Number of Natural Teeth	> 20	142	361	128.256	< 0.001
	16ཞ20	46	423
	< 16	5	329
Number of Dentures	0	148	346	-	< 0.001
	1ཞ2	40	378
	3ཞ4	5	308
	> 5	-	81
Whether experiencing dry mouth	No	193	561	-	< 0.001
	Yes	-	552
Subjective Chewing Difficulty	No	193	577	-	< 0.001
	Yes	-	536
Frailty Status	No Frail	4	9	-	0.001
	Prefrail	189	1023
	Frail	-	81
Oral Health-Related Quality of Life	Low Level	98	611	6.514	0.039
	Medium Level	91	390
	High Level	4	12