Table 1.

Inclusion and exclusion criteria

Inclusion	Exclusion
Community
‚community‘as geographic or political-administrative area (e.g. neighborhood, residential area, district, city, village)	‚community‘as ethnical group (e.g. migration background, religion) or subcultural identity (e.g. gay community) without geographical reference
Article type
peer-reviewed original articles	editorials, reviews, articles on theory or study design, thesis
Study type and research question
interventional studies (e.g. RCT, quasi-experimental study, pre-post-test)	observational studies (e.g. cross-sectional or case-control study)
research question on one or more SES factor (e.g. occupation, education, income)	no research question on health inequalities according to SES factors
Intervention
multiple interventions (two at least)	single interventions
interventions outside the healthcare system offered to people without diagnosed illness	clinical treatments, palliative or rehabilitative interventions