This study, which is aimed at comparing the effectiveness of the most frequently used drugs in the first line in primary care for the preventive treatment of migraine (amitriptyline, flunarizine, topiramate and propranolol), is a multicentre, pragmatic, parallel group, open randomised trial. Adults (≥18) candidates for preventive treatment for migraine; those with a frequency of ≥4 monthly migraine days, and who agree to participate in the clinical trial, will be randomised to one of the 4 groups. Sample: 460 patients. The primary outcome will be the reduction in monthly migraine days, comparing amitriptyline, flunarizine and topiramate with propranolol.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
460
Treatment will be prescribed for GPs and they will decide the specific dosage 25-100 mg/12h.
Treatment will be prescribed for GPs and they will decide the specific dosage 2,5-10 mg mg/24h.
Treatment will be prescribed for GPs and they will decide the specific dosage 10-75 mg/24h.
Treatment will be prescribed for GPs and they will decide the specific dosage 20-120 mg/12h.
To evaluate the effectiveness of the most frequently used drugs in primary care for the preventive treatment of migraine according to the reduction in monthly migraine days, comparing amitriptyline, flunarizine and topiramate with propranolol.
Clinical effectiveness: change in the mean number of monthly migraine days (MMD) at 12 weeks of treatment from baseline.
Time frame: 12 weeks
Calculate the rate of responders (reduction of at least 50% in monthly migraine days compared to baseline)
Proportion of patients responding at 12 weeks from start of treatment; \<25% change in mean number of MMD: non-responders, 25-49%: partial responders, 50-75%: responders, \>75%: excellent responders.
Time frame: 12 weeks
Evaluate effectiveness before completing the clinical trial
Change in mean number of MMDs at 4 and 8 weeks from baseline.
Time frame: 4, 8 and 12 weeks
Estimate the reduction in the intensity of migraine attacks
Reduction in the mean number of moderate-severe MMD at 4, 8 and 12 weeks from the start of treatment.
Time frame: 4, 8 and 12 weeks
Estimate the prevalence of symptoms associated with migraine
Proportion of patients with associated symptoms at 12 weeks from the start of treatment; photophobia, phonophobia, nausea.
Time frame: 12 weeks
Evaluate adherence to preventive treatment
Proportion of adherent and non-adherent patients (according to taking \[yes/no\] of the study treatment with the prescribed dosage) at 12 weeks from the start of treatment.
Time frame: 12 weeks
Estimate the reduction in the use of symptomatic treatment drugs used to treat migraine attacks (analgesics, NSAIDs, triptans, others).
Change in the mean number of drugs used for symptomatic treatment at 4, 8 and 12 weeks from baseline.
Time frame: 4, 8 and 12 weeks
Evaluate reconsultation visits due to migraine attacks
Reconsultations: Type of consultation (PCC, PC emergency, hospital, hospital emergency). Number of consultations after 12 weeks from the start. Number of medical tests performed relacionadas con la migraña.
Time frame: 4, 8 and 12 weeks
Evaluate improvement in quality of life and patient satisfaction
Change in EQ-5D-5L questionnaire at 12 weeks from baseline. Including Visual Analogue Scale (0-100). Lower scores means worse health condition.
Time frame: 12 weeks
Analyze the differences between men and women regarding study drugs effectiveness.
Result comparison change in mean number of MMDs adjusted by sex
Time frame: 4, 8 and 12 weeks
Estimate the disability associated with migraine attacks according to number of paticipans reporting temporary work disability, absenteeism, presenteeism.
Change in the number of ILT days, absenteeism, presenteeism at 12 weeks from the start of treatment.
Time frame: 12 weeks
Incidence of adverse events of the four drugs used in the preventive treatment of migraine .
Number of adverse events
Time frame: 12 weeks
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