Evaluating the effect of Coriandrum sativum syrup on being migraine-free using mixture models

Background: Coriandrum sativum (coriander) is prescribed as a treatment for headache in traditional Persian medicine. Several investigations have been carried out to find the medicinal properties of this plant. However, no study has evaluated the effectiveness of this plant on becoming migraine-free. Methods: Sixty-eight migraineurs were randomly allocated to two equal groups of intervention and control . Each received 500 mg of sodium valproate in addition to 15 mL of coriander or placebo syrup three times a day. We followed subjects and recorded their migraine duration in the 1 st , 2 nd , 3 rd , and 4 th weeks. We applied an appropriate statistical model so as to consider special features of the data, which led to more accurate results using SAS 9.4 Results: Our findings showed that the probability of being migraine-free was not only considerably higher in final weeks of the study (p