“…Especially, it was also revealed that the low sensitivity of the MDQ would be more problematic in detecting cases of BP-II than of BP-I in general population studies (Dodd et al, 2009;Zimmerman and Galione, 2011). To improve its low sensitivity, researchers have suggested that the threshold for functional impairment be eliminated or lowered to a minor level, and this modification was proven to achieve a 20-50% point improvement in sensitivity without sacrificing specificity (Chung et al, 2009;Miller et al, 2004;Zimmerman and Galione, 2011). Meanwhile, Jon et al (2009) validated the K-MDQ in a clinical sample with the elimination of parts 2 and 3, which yielded acceptable levels of sensitivity (0.75) and specificity (0.69) against unstructured clinical diagnoses.…”