Abstract Background Prognostic factors are associated with the risk of a subsequent outcome in people with a given disease or health condition. Meta-analysis using individual participant data (IPD). where the raw data are synthesised from multiple studies. has been championed as the gold-standard for synthesising prognostic factor studies. https://www.jmannino.com/great-save-Bang-XXL-Switch-Duo-2500-Puffs-7mL-amazing-save/