- The table depicts crude mean and weighted mean for knowledge of symptoms of acute myocardial infarction in a group that was asked closed-ended questions and a group that was asked open-ended questions. For our analysis, we proceeded as described in Table 3. STEMI = ST-elevation myocardial infarction. AMI = acute myocardial infarction. CHD = coronary heart disease. Studies included in the table: Study 11, [32] 12, [33] 13, [34] 14, [40] 15, [41] 16, [42] 17, [43] 18 [44].
