Table 2

Coding framework as identified for product analysis

GroupsDimensionsIdentification method
AM technologyVat photopolymerization / powder bed fusion / material extrusion / material jetting / binder jetting / sheet lamination / directed energy depositionTheory-driven
Product categoryPrototype / finished good / spare part / enhancement part / component part / machine tool / repairTheory-driven
Design typeOwn design / shared designTheory-driven
Organization typeCommunity / company / academicData-driven (text mining)
ProductE.g. ventilator, face shield etc.Data-driven (deduced through systematic review on rolling basis)
IndustryE.g. medical, industrial etc.Data-driven (deduced through systematic review on rolling basis)
Scale<500 / 501–10,000 / >10,000 pieces producedPredefined
LocationAll identified countriesPredefined

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