Table 4.

Measures that were applied to assess changes in CBSD symptomatology and other treatment outcomes across included studies

Questionnaires	Abbreviation	Reference	Studies
Yale-Brown Obsessive Compulsive Scale-Shopping Version	Y-BOCS-SV	Monahan et al. (1996)	Benson et al. (2014) Black et al. (2000) Filomensky and Tavares (2009) Grant et al. (2012) Koran et al. (2002) Koran et al. (2003) Koran et al. (2007) Mitchell et al. (2006) Müller, Mueller, et al. (2008) Müller et al. (2013) Nicoli de Mattos et al. (2020) Ninan et al. (2000)
Compulsive Buying Scale	CBS	Faber & O'Guinn (1992)	Benson et al. (2014) Koran et al. (2003) Mitchell et al. (2006) Müller, Mueller, et al. (2008) Müller et al. (2013) Nicoli de Mattos et al. (2020)
Valence Compulsive Buying Scale	CBS-Valence	Valence et al. (1998)	Benson et al. (2014)
Richmond Compulsive Buying Scale	CBS-Richmond	Kukar-Kinney et al. (2009)	Benson et al. (2014)
German Compulsive Buying Scale	G-CBS	Valence et al. (1988) Raab et al. (2005)	Müller, Mueller, et al. (2008)
Impulse Buying Tendency Scale	n/a	Weun et al. (1998)	Koran et al. (2003)
Compulsive Buying Follow-up Scale	CBFS	Nicoli de Mattos et al. (2019)	Nicoli de Mattos et al. (2020)
Other outcome measures	Definition
Purchasing recalls	Number of CBSD episodes, total amount of money spent, total amount of time spent shopping over a certain time period		Benson et al. (2014) Mitchell et al. (2006)
Relapse	Occurrence of an episode once treatment had begun		Granero et al. (2017)
	Y-BOCS-SV score ≥17		Koran et al. (2003) Koran et al. (2007)
Compliance	Patients' adherence in performing inter-sessions tasks (e.g., recording their spending, avoiding risky situations and controlling their spending by presenting receipts)		Granero et al. (2017)
Dropout	Missing therapy sessions on three or more occasions without notifying the therapist		Granero et al. (2017)