Figure 1
The figure contains a rectangle titled “Following PRISMA framework” positioned at the top. On the left, a vertical label reads “Identification”, followed by “Screening”, and “Eligibility”. Under “Identification”, a large rounded rectangle is labeled “Records identified through: Scopus (n equals 5668), Snowballing (n equals 35), Web searches (n equals 11), Time span: 2010 to 2023, Published in English”. A dotted rectangle beside it is labeled TITLE-ABS-KEY (“circular economy” OR “circularity” OR “C E”) AND TITLE-ABS-KEY (“micro asterisk” OR “product” OR “building” OR “material”) AND TITLE-ABS-KEY (“taxonomy” OR “indicator asterisk” OR “indice asterisk” OR “metric asterisk” OR “index” OR “measure” OR “assess asterisk” OR “evaluat asterisk” OR “quantif asterisk” OR “calculat asterisk”). A downward arrow extends from the identification section to the box labeled “Total records retrieved (n equals 5703)”. A rightward arrow extends from this box to the box labeled “Editorials and duplicates removed (n equals 131)”. Under “Screening”, a downward arrow extends from “Total records retrieved (n equals 5703)” and leads to the rectangle labeled “Abstract screening (n equals 5572)”. A rightward arrow extends from this rectangle to the rectangle labeled “Records excluded, exclusion criteria:” that lists: “Not related to C E evaluation or development and application of indicators (K P I s)”; “Other C E levels rather than micro-level”; “ Review papers (n equals 5503)”. Under “Eligibility”, a downward arrow extends from “Abstract screening (n equals 5572)” to the rectangle labeled “Full-text records assessed for eligibility (n equals 69)”. A rightward arrow extends from this rectangle to the rectangle labeled “Full-text records excluded, exclusion criteria:” that lists: “Focused on context-specific indicators that are hard to be applied to other sectors”; “Qualitative-based indicators (n equals 18)”. A downward arrow extends from “Full-text records assessed for eligibility (n equals 69)” to the rectangle labeled “Records included in final review (n equals 51) Papers: 36 Reports and Commercial tools: 8 Standards: 2 Theses: 5”. On the left side, a dotted rectangle is labeled “First Step: Meta-synthesis” and states “Identification of 52 micro-level K P I s”. A dotted downward arrow connects this box to another dotted rectangle labeled “Second Step: Fuzzy Delphi Method (F D M)” that states “52 validated K P I s in the building context”. A rightward dotted arrow extends from “Second Step: Fuzzy Delphi Method (F D M)” to a rectangle labeled “Round 1: Refine and validate building circularity K P I s” that states “7-point Likert Scale plus an open-ended question”. A rightward dotted arrow extends from this rectangle to a rectangle labeled “Round 2: Assign weights to the validated K P I s” that states “F A H P 5-point Likert Scale”.Research method and design. Source: Authors’ own work