Compared to drug therapy only , BMM demonstrated larger decreases in catastrophizing scores ( 19.16 to 9.89 vs 16.78 to 11.84 , P < .001 ) and increases in number of positive coping strategies ( proactive : 1.09 to 1.90 vs 1.16 to 1.09 , P < .001 ; anticipatory : 0.19 to 0.69 vs 0.10 to 0.08 , P < .001 ; migraine management : 0.14 to 0.36 vs 0.04 to 0.04 , P < .001 ) at the end of the follow-up period .