Table 6.

Assessment of the quality of the studies.

Study	Breast cancer patients or breast cancer survivors	Detailed description of the psychological intervention	Training conducted by a trained psychologist	Supervision during treatment or protocol screening for adherence	Intention to treat analysis	Randomization by a third party	Blind conditions	Control group without treatment	Absence of differential attritions between groups	Absence of reporting bias	Total
Svensk et al. (2009)	Yes	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes	8/10
Kalaitzi et al. (2007)	Yes	Yes	Yes	No	Yes	No	Yes	Yes	Yes	Yes	8/10
Rahmani et al. (2014)	Yes	Yes	N/A	No	Yes	No	Yes	Yes	Yes	Yes	7/10
Jun et al. (2011)	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes*	Yes	Yes	9/10
Sebastián et al. (2008)	Yes	Yes	N/A	No	Yes	No	Yes	Yes	No	Yes	6/10
Crane-Okada et al. (2012)	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	No	Yes	8/10
Sherman et al. (2018)	Yes	Yes	N/A	No	No	Yes	Yes	No	No	Yes	5/10

N/A, not available.

^*unspecified “usual care.”