Tracking the SDGs in an ‘integrated’ manner: A proposal for a new index to capture synergies and trade-offs between and within goals

•Agenda 2030 requires tracking progress towards the SDGs in an ‘integrated’ way.•The SDG Index does not allow for the ‘integrated’ nature of the SDGs.•The MSI overcomes problems associated with the arithmetic and geometric means.•The new MSI inspired I-SDI embraces synergies between and within goals...

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