Table 2. Characteristics of the included original studies.

First author (year), country	study objectives*	study design	health care setting	SDM-Q-9 &/-Doc (assessment point)	Primary or secondary outcome	intervention	decisional context
Brito et al. (2015), USA	test a DA	pre-& post- implementation study	outpatient specialty care	SDM-Q-9 &-Doc (directly after consultation)	primary	DA & training of physicians	Graves’ Disease
Hölzel et al, (2012), Gerrmany	assess the impact of an integrated health care project on perceived patient participation in medical decision-making	quasi-experimental controlled cohort-study	primary integrative care	SDM-Q-9 (assessment not directly after consultation)	primary	training for physicians	chronically ill patients
Körner et al. (2012), Germany	evaluate an interprofessional SDM training	cRCT	inpatient specialty care	SDM-Q-9 (adaptation for all HCPs, assessment point n/r)	primary	interprofessional training programme	n/r
Körner et al. (2014), Germany	evaluate an interprofessional SDM training programme	cRCT	inpatient specialty care	SDM-Q-9 &-Doc (adaptation for all HCP’s perspectives, directly after consultation)	primary	interprofessional training programme	n/r
Tinsel et al. (2013), Germany	implement and evaluate a SDM training programme for GPs on perceived participation	cRCT	primary care	SDM-Q-9 (directly after consultation)	primary	training for GPs	hypertension

GP = general practitioner, DA = decision aid, HCP = health care provider, n/r = not reported;

* only objectives which could be answered with SDM-Q-9 &/-Doc