From:  Relation of sinonasal anatomic variants with the frequency, pain severity and time off work in patients with migraine
 

Headache day frequency, pain severity (VAS) and time off work per month according to concha bullosa

Characteristics
Mean ± SD (median)		Right concha bullosaLeft concha bullosa
AbsentPresentPAbsentPresentP
Migraine frequency (days)11.29 ± 2.92 (10)11.41 ± 4.63 (15)0.15711.54 ± 3.14 (10)11.31 ± 4.47 (12)0.398
Time off work4.15 ± 1.80 (3)6.22 ± 3.68 (7)0.001**3.48 ± 1.07 (3)6.31 ± 3.56 (7)0.001**
Pain severity VAS8.71 ± 1.45 (9)9.65 ± 0.61 (10)0.001**8.85 ± 1.56 (10)9.53 ± 0.73 (10)0.027*
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VAS: visual analog scale. Mann Whitney U test indicates statistically significant differences, *: P < 0.05; **: P < 0.01