1134-8046
1134-8046
S1134-80462021000500194
10.20986/resed.2021.3932/2021
Chile
Chile
Chile
Chile
Chile
00
08
2021
00
08
2021
28
4
194
210
[
2016
42
2
2
317-32
]
[
2015
156
6
6
1003-7
]
[
2017
57
4
4
356-63
]
[
2017
149
10
10
441-8
]
[
2018
13
9
9
]
[
2018
20
1
1
53-62
]
[
2019
29
6
6
809-19
]
[
2016
46
3
3
319-29
]
[
2014
44
1
1
68-75
]
[
2018
129
2
2
343-66
]
[
2017
18
4
4
359
]
[
2011
16
5
5
413-8
]
[
2020
50
11
11
592-6
]
[
2018
48
1
1
121-33
]
[
2017
76
2
2
318-28
]
[
2018
34
12
12
901-15
]
[
2020
54
2
2
79-86
]
[
2017
15
4
4
413-21
]
[
2016
12
2
2
65-71
]
[
2012
91-104
]
[
2015
85
236-44
]
[
2013
35
6
6
640-8
]
[
2019
142
260-9
]
[
2014
30
3
3
937-43
]
[
2013
4
DEC
DEC
909
]
[
2018
14
1
1
223-32
]
[
2018
75
4
4
271-7
]
[
2020
15
12
12
]
[
2018
19
1
1
27
]
[
2020
382
6
6
554-61
]
[
2020
46
102131
]
[
2014
94
4
4
477-89
]
[
2013
3
1
1
]
[
2011
91
1
1
25-36
]
[
2017
17
1
1
375
]
[
2018
111
7
7
240-52
]
[
2016
32
5
5
356-67
]
[
2019
10
]
[
2017
23
5
5
1062-70
]
[
2018
98
5
5
408-23
]
[
2017
95
1
1
29-34
]
[
2009
11
4
4
R120
]
[
1997
]
[
Spanish Back Pain Research Network
2006
31
1
1
104-10
]
[
2007
11
2
2
153-63
]
[
2016
41
15
15
E931-6
]
[
2016
246
808-14
]
[
2008
58
546
546
32-6
]
[
2017
15
1
1
193
]
[
2020
]
[
2019
29
2
2
266-74
]
[
2018
14
2
2
e25-33
]
[
2010
6
3
3
141-4
]
[
2016
19
8
8
763-72
]
[
2018
40
3
3
329-37
]
[
2015
36
2
2
157-62
]
[
2019
16
13
13
]
[
2018
43
1
1
35-9
]
[
2017
9
6
6
588-95
]
[
2020
10
1
1
3372
]
[
2020
30
5
5
904-13
]
[
2020
107
43-9
]
[
2020
12
5
5
455-71
]
[
2014
201
1
1
35-9
]
[
2003
18
6
6
771-87
]
[
2014
8
135-45
]
[
2008
64
1
1
13-20
]
[
2018
16
1
1
233-7
]
[
2017
18
7
7
747-56
]
[
2017
4
4
4
]
[
2020
50
6
6
1465-80
]
[
2020
54
6
6
326-31
]
[
2017
49
9
9
1868-76
]
[
2019
16
17
17
]
[
2006
22
3
3
286-94
]
[
2010
26
1
1
23-9
]
[
2019
14
4
4
]
[
2020
50
8
8
418-30
]
[
2020
18
3
3
372-82
]
[
2019
39
5
5
805-17
]
[
2019
49
4
4
212-5
]
[
2018
98
5
5
381-97
]
[
1994
8
4
4
]
[
2016
99
8
8
1389-93
]
[
2018
2018
]
[
2019
14
10
10
]
[
2020
]
[
2014
15
2
2
129-35
]
[
2018
48
7
7
519-22
]
[
2021
]
[
2021
51
2
2
57-9
]
[
2021
22
1
1
9-20
]
[
2020
9
10
10
]
[
2014
96
3
3
295-301
]
[
2019
75
1
1
]
[
2020
54
24
24
1451-62
]
[
2016
2
4
4
312-20
]
[
2015
67
11
11
3047-57
]
[
2017
18
1
1
]
[
2019
33
8
8
1182-6
]
[
2019
71
2
2
281-9
]
[
2019
366
September
September
1-7
]
[
2020
14
5
5
511-23
]
[
2006
174
6
6
801-9
]
[
2013
18
3
3
119-26
]
[
2019
9
9
]
[
2017
6
6
]
[
2013
12
12
]
[
2021
31
4
4
904-11
]
[
2019
2019
5
5
]
[
2017
9
9
]
[
2015
2015
4
4
]
[
2019
46
1-8
]
[
2012
18
7
7
641-6
]
[
2016
12
2
2
65-71
]
[
2012
15
3 Suppl
3 Suppl
ES205-13
]
[
2021
25
1
1
51-70
]
[
2011
18
18
905-12
]
[
2015
17
1
1
10-1
]
[
2017
2017
4
4
]
[
2020
21
5-6
5-6
529-45
]
[
2019
14
9
9
]
[
2018
22
5
5
33
]
[
2010
21
2
2
107-21
]
[
2015
17
2 Suppl. 1
2 Suppl. 1
147-56
]
[
2020
19-25
]
[
2002
18
4
4
251-61
]
[
2013
39
2
2
151-66
]
[
2000
85
3
3
317-32
]
[
2014
58
310
310
10-23
]
[
2019
122
June
June
]
[
2018
34
6
6
532-42
]
[
2014
58
310
310
10-23
]
[
2018
33
Suppl 1
Suppl 1
38-45
]
[
2017
18
6
6
1040-8
]
[
2013
14
7
7
971-81
]
[
2018
3
3
3
e663
]
[
2012
19
5
5
672-80
]
[
2020
21
5
5
882-8
]
[
2020
42
8
8
1141-52
]
[
2017
21
2
2
374-84
]
[
2013
8
9
9
]
[
2011
15
8
8
775.e1-775.e11
]
[
2020
27
3
3
]
[
2020
161
6
6
1150-68
]