tokens: RESULTS : The percent improvements at six months were as follows : off - period score for overall motor function , 28 percent ( 95 percent confidence interval , 19 to 38 percent ), with most of the improvement in the contralateral limbs ; off - period score for activities of daily living , 29 percent ( 95 percent confidence interval , 19 to 39 percent ); on - period score for contralateral dyskinesias , 82 percent ( 95 percent confidence interval , 72 to 91 percent ); and on - period score for ipsilateral dyskinesias , 44 percent ( 95 percent confidence interval , 29 to 59 percent ). The improvements in dyskinesias and the total scores for off - period parkinsonism , contralateral bradykinesia , and rigidity were sustained in the 11 patients examined at two years .