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. 2016 May 9;37(5):423–434. doi: 10.1177/0333102416649092

Figure 6.

Figure 6.

At 24 months, 61% (20/33) had a therapeutic response, defined as either an acute and/or frequency response of at least 50%, and of these, 65% (13/20) had a very strong (≥75%) response to therapy. More than 80% (27/33) of patients experienced a response of at least 30%.