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Table 4 Proportions with, and adjusted odds ratios (AOR) for, frequent migraine attacks (10–14 days/month) among different BMI categories

From: Body mass index and migraine: a survey of the Chinese adult population

BMI Frequent migraine n/denominator (%) AOR (95 % CI) p
Normal 10/121 (8.3 %) Reference  
Underweight 0/13 (0.0 %) 0.000 0.999
Overweight 5/65 (7.7 %) 1.03 (0.32–3.29) 0.960
Obese 8/53 (15.1 %) 2.11 (0.74–5.98) 0.161
Morbidly obese 1/18 (5.6 %) 0.64 (0.08–5.41) 0.680
Total 24/270 (8.9 %)   
  1. Overall χ2 = 4.208
  2. p = 0.379