Fig. 4: Convergency of Evidence (CoE) for the cumulative body of related studies assessing the effect of salt on blood pressure, shown by publication year.

The blue dashed line at 2018 indicates the cutoff year for inclusion in the latest Cochrane Database of Systematic Reviews (CDSR). Greens lines represent ‘excitatory’, yellow lines represent ‘no change’, and red lines represent ‘inhibitory’. Solid lines with circle markers represent the cumulative probability of relations, and dotted lines represent the cumulative number of studies.