“…Among the 41 cross-sectional studies assessed by the Axis checklist, all those studies had "Yes" answer for questions number 1, 2, 4, 5, 6, 9, 10, 11, 12, 15, 16, and 17 and "No" answer for question number 3 and 14. Eighteen studies did not measure and categorize the non-responders [6], [7], [9], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26]. There were nine studies [10], [18], [24], [27], [28], [29], [30], [31], [32] collecting data on statin use directly from the patients either by interview or selfreporting.…”