Research Article

Analysis of the Relationship between Adult Asthma and Stroke: A Longitudinal Follow-Up Study Using the Korean National Sample Cohort

Table 4

Subgroup analysis of crude and adjusted hazard ratios (95% confidence interval) of asthma for hemorrhagic and ischemic stroke according to medication histories.

CharacteristicsHemorrhagic strokeIschemic stroke
Crudep-valueAdjusted†p-valueCrudep-valueAdjusted†p-value

Systemic corticosteroid and inhaled corticosteroid use with/without other medication (n = 81,556)
Asthma1.00 (0.87-1.14)0.9831.01 (0.88-1.15)0.9461.03 (0.96-1.11)0.3911.01 (0.94-1.09)0.742
Control1.001.001.001.00
Systemic corticosteroid use without inhaled corticosteroid, with/without other medication (n = 143,778)
Asthma0.76 (0.66-0.87)<0.0010.75 (0.65-0.86)<0.0010.81 (0.76-0.88)<0.0010.79 (0.73-0.85)<0.001
Control1.001.001.001.00
Inhaled corticosteroid use without systemic corticosteroid, with/without other medication (n = 5,658)
Asthma0.75 (0.34-1.63)0.4680.79 (0.36-1.72)0.5550.82 (0.55-1.23)0.3440.85 (0.56-1.27)0.424
Control1.001.001.001.00
Other medications without systemic corticosteroid and inhaled corticosteroid (n = 3,736)
Asthma0.08 (0.01-0.65)0.0170.08 (0.01-0.64)0.0171.05 (0.64-1.72)0.8521.15 (0.70-1.89)0.587
Control1.001.001.001.00

Cox proportional hazards regression model, significance at p < 0.05.
† Adjusted model for age, sex, income, region of residence, hypertension, diabetes, hyperlipidemia, ischemic heart disease, and depression histories.