Tooth retention, health, and quality of life in older adults: a scoping review

BMC Oral Health

Table 1 Number of articles (n = 140) in scoping review by outcome, study design, location, and “Tooth Retention Concept”

Medical or dental outcomes	Article study design by outcomes			Geographic location				Tooth retention concept
Medical or dental outcomes	Observational study (research)	Interventional study (research)	Total	Japan	Europe	U.S.	Elsewhere	FD	SDA	FD + SDA
Cognitive decline/functional dependence	52	0	52	28	14	1	14	48	5	2
Quality of life	43	2	45	9	17	2	19	31	3	1
Health status/chronic diseases	41	2	43	17	12	4	11	38	5	3
Nutrition	18	2	20	6	8	2	5	15	6	3
Total	154	6	160	60	51	9	49	132	19	9

Columns don’t add up to 140—# of articles in this review. This is because of "double- or even triple-counting". For example, under the column, "geographic location", some studies were conducted in multiple countries, hence counted more than once. Some studies examined more than one outcome too for example. Same applies for all other columns

ISSN: 1472-6831