The total score
on the BSDS can range from 0 to 25. The original study reported
that the overall sensitivity and specificity for bipolar types I, II, and
NOS of the BSDS using the cut-off point of 13 or more were 0.75 and
0.93, respectively (Ghaemi et al., 2005). The screening performances
for sensitivity and specificity of the Japanese version of BSDS, using
the original cut-off point (13 or more), were reported as 0.53 and
0.59, respectively, and using the optimal cut-off point (11 or more)
were 0.63 and 0.73, respectively (Tanaka and Koyama, 2011).