Table 2 Crude and adjusted hazard ratios (95% confidence interval) of asthma for migraines in study I.

From: Bidirectional association between asthma and migraines in adults: Two longitudinal follow-up studies

Characteristics

Hazard ratios (HR)

Crude†

P-value

Adjusted†

P-value

HR for migraine

  Asthma

1.60 (1.53–1.66)

<0.001*

1.47 (1.41–1.53)

<0.001*

  Control I

1.00

 

1.00

 

HR for migraine with aura

  Asthma

1.68 (1.45–1.95)

<0.001*

1.54 (1.33–1.78)

<0.001*

  Control I

1.00

 

1.00

 

HR for migraine without aura

  Asthma

1.59 (1.52–1.65)

<0.001*

1.46 (1.40–1.53)

<0.001*

  Control I

1.00

 

1.00

 
  1. *Cox-proportional hazard regression model. Significance at P < 0.05.
  2. †Model stratified by age, sex, income, and region of residence.
  3. ‡Model adjusted for depression history and Charlson Comorbidity Index calculated without pulmonary disease.
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