Table 2

Data for all stastically significantly different conditions between chronic migraine (N=655) and episodic migraine (N=11 249)

ConditionChronic migraineEpisodic migraineOR (95% CI), p value*
N (%)N (%)
Allergies or hay fever392 (59.85)5374 (50.66)OR (95% CI)=1.47 (1.25 to 1.73, p≤0.001)
Anxiety198 (30.23)1993 (18.79)OR (95% CI)=1.80 (1.51 to 2.15, p≤0.001)
Arthritis220 (33.59)2354 (22.19)OR (95% CI)=1.71 (1.43 to 2.05, p≤0.001)
Asthma160 (24.43)1827 (17.22)OR (95% CI)=1.53 (1.27 to 1.84, p≤0.001)
Bipolar disorder30 (4.58)298 (2.81)OR (95% CI)=1.56 (1.06 to 2.31, p=0.024)
Bronchitis126 (19.24)1370 (12.91)OR (95% CI)=1.54 (1.25 to 1.89, p≤0.001)
Chronic bronchitis60 (9.16)477 (4.50)OR (95% CI)=1.99 (1.49 to 2.65, p≤0.001)
Chronic pain206 (31.45)1599 (15.07)OR (95% CI)=2.49 (2.08 to 2.97, p≤0.001)
Circulation problems113 (17.25)1212 (11.42)OR (95% CI)=1.51 (1.21 to 1.87, p≤0.001)
Depression (Patient Health Questionnaire-9)192 (30.19)1767 (17.24)OR (95% CI)=2.00 (1.67 to 2.40, p≤0.001)
Depression (self-report of a physician diagnosis)270 (41.22)2718 (25.62)OR (95% CI)=1.99 (1.68 to 2.34, p≤0.001)
Emphysema or chronic obstructive pulmonary disease32 (4.89)276 (2.60)OR (95% CI)=1.73 (1.18 to 2.54, p=0.005)
Heart disease or angina63 (9.62)673 (6.34)OR (95% CI)=1.43 (1.08 to 1.90, p=0.012)
High blood pressure221 (33.74)2951 (27.82)OR (95% CI)=1.23 (1.03 to 1.47, p=0.021)
High cholesterol224 (34.20)2713 (25.57)OR (95% CI)=1.46 (1.23 to 1.73, p≤0.001)
Obesity167 (25.50)2223 (20.95)OR (95% CI)=1.24 (1.03 to 1.50, p=0.020)
Sinusitis296(45.19)3926 (37.01)OR (95% CI)=1.39 (1.18 to 1.63, p≤0.001)
Stroke26 (3.97)234 (2.21)OR (95% CI)=1.65 (1.09 to 2.52, p=0.019)
Ulcers99 (15.11)860 (8.11)OR (95% CI)=1.91 (1.52 to 2.40, p≤0.001)
  • * ORs and 95% Wald CIs adjusted for age, gender and income.