Table 2 Characteristics and findings of population-based studies included in quantitative analysis reporting prevalence of one or more premonitory symptoms in people with migraine
First author, publication year | Study design | Minimum age of participants (years) | Monthly migraine days | Monthly migraine attacks | Primary endpoint: relative frequency of premonitory symptom(s) | Definition of premonitory symptoms | Enquiry method | Sample size N | Participants with ≥ 1 premonitory symptom n (%) |
|---|---|---|---|---|---|---|---|---|---|
Baykan, 2015 [13] | Cross-sectional, retrospective | ≥ 18 | Not reported | 6.2/5.5 (with/without allodynia) | No | Not reported | Interview (not specified) | 871 | 587 (67.4%) |
Kececi, 2002 [14] | Cross-sectional, retrospective | ≥ 7 | Not reported | Not reported | No | Not reported | Interview (not specified) | 173 | 82 (47.4%) |
Rasmussen, 1992 [15] | Cross-sectional, retrospective | ≥ 18 | Not reported | Not reported | No | Symptoms occurring days or hours prior to onset of migraine | Patient-completed questionnaire (predefined list of 5 symptoms) | 96 | 13 (13.5%) |
Russel, 1996 [16] | Cross-sectional, retrospective | ≥ 18 | Not reported | Not reported | No | Symptoms occurring days or hours prior to onset of migraine | Patient-completed questionnaire (predefined list of 7 symptoms) | 498 | 39 (7.8%) |