Fig. 3
From: Variation in hypertension clinical practice guidelines: a global comparison
Sankey diagram illustrating the 1st-, 2nd- and 3rd-step drug recommendations made by the 48 guidelines. A, ACEi or ARB; B, beta-blocker; C, CCB; D, diuretic; α, alpha-blocker. “/” indicates a choice between drug classes, whilst “+” indicates concurrent prescription of multiple drug classes. The size of pathways is representative of the number of guidelines making recommendations