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Table 2 Diagnostic accuracy after first session and at final exam

From: Puzzle based teaching versus traditional instruction in electrocardiogram interpretation for medical students – a pilot study

EKG interpretation After Traditional After Puzzle Final Test
Normal 33% 33% 78%
Left Bundle Branch Block NT NT 57%
Acute Infarction 44% 50% 64%
Third Degree AV block 33% 17% NT
Atrial Fibrillation/Flutter 11% 33% 57%
  1. NT = Not tested