CM With MO CM Without MO Fremanezumab Fremanezumab Quarterly (n = 201) Monthly (n = 198) Placebo (n = 188) Quarterly (n = 174) Monthly(n = 177) Placebo(n = 183) Age, mean (SD), y 44.6 (11.6) 44.8 (10.9) 45.0 (10.8) 39.0 (12.6) 36.2 (11.5) 37.7 (12.1) Sex, female, n (%) 183 (91) 173 (87) 168 (89) 147 (84) 154 (87) 158 (86) BMI, mean (SD), kg/m2 26.4 (5.3) 26.4 (5.0) 26.0 (5.0) 26.9 (5.5) 26.7 (5.3) 26.9 (5.1) Disease history  Years since initial migraine diagnosis, mean (SD) 21.0 (12.7) 22.8 (12.3) 23.2 (13.8) 18.3 (12.9) 17.1 (11.0) 16.7 (11.0)  Current preventive medication use, n (%) 47 (23.4) 54 (27.3) 38 (20.2) 30 (17.2) 31 (17.5) 39 (21.3)  Current use of triptans or ergots, n (%) 141 (70.1) 138 (69.7) 128 (68.1) 67 (38.5) 49 (27.7) 64 (35.0)  Prior topiramate use, n (%) 65 (32.3) 72 (36.4) 77 (41.0) 41 (23.6) 43 (24.3) 40 (21.9)  Prior onabotulinumtoxinA use, n (%) 38 (18.9) 34 (17.2) 32 (17.0) 28 (16.1) 16 (9.0) 17 (9.3) Disease characteristics during the 28-day pretreatment period  Number of headache days of at least moderate severity,b mean (SD) 15.5 (5.0) 14.9 (5.4) 14.8 (5.4) 10.5 (4.8) 10.5 (5.3) 11.7 (5.8)  Number of migraine days,c mean (SD) 17.2 (4.6) 17.5 (4.9) 17.3 (5.0) 15.0 (4.9) 14.3 (5.0) 15.4 (5.1)  Number of days of acute medication use, mean (SD) 18.1 (4.0) 18.4 (4.5) 18.2 (4.4) 7.4 (4.4) 7.1 (4.5) 7.7 (4.5)  HIT-6 score, mean (SD) 64.5 (5.1) 65.3 (4.4) 63.8 (5.2) 64.0 (4.3) 63.9 (4.3) 64.3 (4.4)  PHQ-9 score, mean (SD) 4.3 (5.5) 5.9 (6.7) 3.7 (5.7) 4.1 (5.6) 4.0 (5.6) 4.0 (5.6) MSQoL domain scores  RFR, mean (SD) 49.1 (18.9) 46.8 (19.7) 49.7 (20.5) 48.2 (18.3) 49.7 (18.7) 48.8 (19.2)  RFP, mean (SD) 67.5 (21.1) 63.2 (23.5) 67.5 (22.9) 67.1 (20.4) 68.7 (20.6) 67.4 (21.7)  EF, mean (SD) 58.4 (26.2) 54.3 (27.1) 58.0 (27.5) 55.8 (26.9) 60.4 (25.1) 57.7 (25.4)