Fig. 2

Local drifts of incidence rate and age distribution of incidences by SDI quintiles, 1990–2019. A Local drifts of migraine incidence rate (estimates from age-period-cohort models) for 16 age groups (5–9 to 80–84 years), 1990–2019. The dots and shaded areas indicate the annual percentage change of incidence rate (% per year) and the corresponding 95% CIs. B Temporal change in the relative proportion of migraine incidences across age groups (5–9, 10–14, 15–19, 20–24, 25–29, 30–39, 40–49, 50–84 years), 1990–2019. SDI: Socio-demographic Index