Inheritance model^# selected with the BIC.

#Models (see Methods): “-” = null, basic, “sub” = subset, “inv. sub” = inverse subset. ∧Migraine characteristics: aura, pulsation, unipain ( = unilateral pain), sound ( = phonophobia), light ( = photophobia), duration of 4–72 hours ( = longdur), nausea, aggravation by physical activity ( = aggrphys), severity inhibits daily activities ( = inhibit), ≥6 attacks/year ( = freq). “*” indicates models with significant LLR test p-values (<0.05) after adjustment for multiple hypothesis testing (see Methods).