Common Symptoms Table 2–9.

Table 2–9. Summary likelihood ratios (LRs) for individual clinical features associated with migraine diagnosis.

Clinical Feature                                   LR+ (95% CI)                                  LR– (95% CI)

Nausea                                                 19 (15–25)                                        0.19 (0.18–0.20)
Photophobia                                         5.8 (5.1–6.6)                                     0.24 (0.23–0.26)
Phonophobia                                        5.2 (4.5–5.9)                                     0.38 (0.36–0.40)
Exacerbation by physical activity        3.7 (3.4–4.0)                                     0.24 (0.23–0.26)