Table 1 Characteristics of included studies
Author | Study year | Study typea | Study Arms | Samples | Age | Gender | Running time | |
|---|---|---|---|---|---|---|---|---|
MLC | SILC | (F/M) | ||||||
Chekan | 2013 | nRCS | 3 | 1940 | 527 | 18-80 | 1888/579 | 2009-2010 |
Dabbagh | 2015 | RCT | 2 | 20 | 20 | < 50 | 29/11 | 2013-2014 |
Hosogi | 2011 | nRCS | 3 | 26 | 31 | 18-77 | 44/13 | 2009-2010 |
Hu | 2013 | RCT | 2 | 30 | 30 | - | - | 2011-2011 |
Lee | 2010 | RCT | 2 | 35 | 35 | 23-84 | 42/28 | 2008-2009 |
Saad | 2013 | RCT | 3 | 35 | 35 | - | 52/18 | 2010-2011 |