Table 6.

Levels of evidence and quality of the included studies.

Number	Authors	Year	Evidence and Quality	Number	Authors	Year	Evidence and Quality
1	Evered et al.	2018	I A	61	An et al.	2018	II A
2	De las Pozas Abril et al.	2011	I A	62	Chung-Sik et al.	2016	III A
3	Honda et al.	2018	III A	63	Rodríguez Soto et al.	2015	V C
4	Styra et al.	2018	III A	64	Alcoba Pérez et al.	2014	III A
5	Shawna Greiner et al.	2019	I A	65	Duarte Martinez et al.	2018	V A
6	Artuz Diaz et al.	2016	II A	66	Dearholt et al.	2012	I A
7	Card et al.	2014	III A	67	Ewan et al.	2010	I A
8	Pavone et al.	2018	III A	68	Koster et al.	2010	I A
9	Wang et al.	2018	III A	69	Vásquez-Marquez et al.	2011	V B
10	Sosa Morales et al.	2017	III A	70	Steiner et al.	2011	V A
11	Rodríguez et al.	2017	III A	71	Renger et al.	2018	III B
12	Miller et al.	2018	I A	72	Gräsner et al.	2016	I A
13	Punjasawadwong et al.	2018	I A	73	Huang et al.	2019	I A
14	Carrera Castro et al.	2014	IV A	74	Mei et al.	2016	III B
15	Dotti et al.	2017	III B	75	The American Geriatrics Society.	2015	II A
16	Van Grootven et al.	2015	III B	76	Vásquez-Marquez et al.	2012	V B
17	Guo et al.	2016	II A	77	Jia et al.	2014	I A
18	Fields et al.	2018	III A	78	Mosk et al.	2018	III A
19	Hesse et al.	2018	III A	79	Read et al.	2017	V C
20	Calderón Delgado et al.	2017	III A	80	Borozdina et al.	2018	I B
21	Peralta-Zamora et al.	2012	V B	81	Luo et al.	2018	II A
22	Ocádiz-Carrasco	2013	III A	82	Jee et al.	2017	I A
23	Chu et al.	2015	II A	83	Munk et al.	2013	III A
24	Aldecoa et al.	2017	IV A	84	Goins et al.	2018	III B
25	Riegger et al.	2018	I B	85	Kassie et al.	2017	I A
26	Fritz et al.	2018	III A	86	Soto Martín	2015	III B
27	Mimi et al.	2018	I A	87	Li et al.	2017	I A
28	MacKenzie et al.	2018	I A	88	González Masís et al.	2014	III A
29	Espinosa Calderón et al.	2017	III B	89	Kratz et al.	2015	III A
30	Lira et al.	2018	V B	90	Smulter et al.	2017	III A
31	Guenther et al.	2011	III A	91	Lee et al.	2018	III A
32	Guenther et al.	2016	III A	92	Chan et al.	2018	III A
33	Sanson et al.	2018	III A	93	Shin et al.	2016	I A
34	Mcdaniel et al.	2012	V B	94	Sánchez et al.	2019	I A
35	Bettelli et al.	2017	V B	95	Munk et al.	2016	I A
36	Celis et al.	2017	V A	96	Esteve et al.	2013	V A
37	Li et a.	2017	III A	97	Smulter et al.	2019	III B
38	Lee et al.	2013	III B	98	Lee et al.	2019	I A
39	Fok et al.	2015	I A	99	Carranza Salas et al.	2017	III A
40	Dong et al.	2017	III A	100	Wen et al.	2018	II A
41	Marcantonio et al.	2017	V A	101	Subramaniam et al.	2019	I A
42	Nuñez Ureña et al.	2017	III B	102	Veiga et al.	2012	III A
43	Hempenius et al.	2014	III A	103	Wang et al.	2018	I A
44	Dan et al.	2017	I B	104	Aitken et al.	2017	II A
45	Cheol et al.	2018	I A	105	Alvarez-bastidas et al.	2018	III C
46	Nadler et al.	2017	I B	106	Nazemi et al.	2017	I B
47	Van Der Sluis et al.	2016	IIA	107	Ha et al.	2018	III A
48	Kang et al.	2019	III A	108	Calderón Rodríguez et al.	2018	V B
49	Xing et al.	2016	III A	109	Steiner et al.	2012	V A
50	Deiner et al.	2017	I A	110	Fukata et al.	2016	II A
51	Chevillon et al.	2015	I A	111	Rincon Franco et al.	2017	I A
52	Guo et al.	2016	IIA	112	Shankar et al.	2018	I A
53	Chacón Zamora et al.	2014	V C	113	Koskderelioglu et al.	2017	III A
54	Romero Luna et al.	2014	III B	114	Winter et al.	2015	III A
55	Jimenez Ardila et al.	2013	IV A	115	J. Smith et al.	2016	III C
56	Van Meenen et al.	2014	II A	116	Hernández et al.	2012	III C
57	Ogawa et al.	2017	III A	117	Järvelä et al.	2017	III B
58	Duan et al.	2018	I A	118	Vilchis-rentería et al.	2012	V B
59	Langer et al.	2019	I A	119	Stephani Hernández et al.	2014	III A
60	Popp et al.	2012	V A	120	Kassie et al.	2018	II A