Quality analysis based on the tool EPHPP
| Autor (año de publicación) | A | B | C | D | E | F | Total |
| West et al (2014)27 | W | S | S | M | S | S | M |
| McGonagle et al (2020)28 | W | S | S | W | S | M | W |
| West et al (2021)29 | W | S | S | M | S | S | M |
| Asuero et al (2014)30 | W | S | S | M | S | S | M |
| Cheng et al (2015)23 | M | S | S | S | S | S | S |
| Schroeder et al (2016)31 | W | S | S | M | S | M | M |
| Gardiner et al (2004)32 | W | S | S | W | S | M | M |
| Gardiner et al (2013)33 | W | S | S | W | S | W | W |
| Holt (2006)24 | M | S | S | W | S | M | M |
| Amutio et al (2015)34 | W | S | S | M | S | S | M |
| Fortney et al (2013)35 | W | M | S | W | S | M | W |
| Krasner et al (2009)36 | W | M | W | W | S | M | W |
| Montero-Marín et al (2017)37 | W | M | W | W | S | W | W |
| van Wietmarschen et al (2018)38 | W | M | W | W | S | W | W |
A, selection bias; B, study design; C, confounders; D, blinding; E, data collection method; EPHPP, Effective Public Health Practice Project; F, withdrawals and dropouts; M, moderate; R, rating; S, strong; W, weak.