TY - JOUR
T1 - Migraine and risk of stroke and acute coronary syndrome in two case-control studies in the Danish population
AU - Osler, Merete
AU - Wium-Andersen, Ida Kim
AU - Jørgensen, Martin Balslev
AU - Jørgensen, Terese Sara Høj
AU - Wium-Andersen, Marie Kim
PY - 2017/8/31
Y1 - 2017/8/31
N2 - Introduction: Migraine has consistently been associated with increased risk of ischemic stroke, while the evidence for a relation with other types of stroke or coronary outcomes is limited. We examined the association between migraine and stroke and acute coronary syndrome (ACS) subtypes and the influence of potential confounding factors. Methods: All first-time hospital contacts for stroke (n=155,216) or ACS (n=97,799) were identified in Danish National Patient Registers and matched with 2 control groups of the background population. A hospital diagnosis of migraine and use of migraine medication were the main exposures and associations (odds ratios [OR]) were estimated using multiple logistic regression. Confounding was also addressed by including use of general headache medication as a negative control exposure. Results: The diagnosis of migraine was associated with increased odds of both stroke (ORcrude, age <50 years: 4.80 [95% CI: 3.75-6.21]; ORcrude, age ≥50 years:1.91 [95% CI: 1.67-2.19]) and ACS (ORcrude:1.88 [95% CI: 1.53-2.32]), while the ORs for the associations between migraine medication and stroke and ACS were lower. Patients with a diagnosis of migraine or redeemed migraine medication had increased ORs of all stroke subtypes (ischemic, hemorrhagic stroke and transient ischemic attacks). The diagnosis of migraine was also associated with both angina and myocardial infarction (ST-elevation Myocardial Infarction [STEMI], non-STEMI and unspecified) with the highest OR for angina. These associations were not fully explained by adjustment for confounding co-variables or when compared with the negative control exposure that were assumed to be influenced by similar confounding factors, but no shared pathogenesis. Conclusion: Hospital-diagnosed migraine was associated with all stroke and ACS subtypes, with ischemic stroke and angina having the highest odds. Confounding did not explain the associations.
AB - Introduction: Migraine has consistently been associated with increased risk of ischemic stroke, while the evidence for a relation with other types of stroke or coronary outcomes is limited. We examined the association between migraine and stroke and acute coronary syndrome (ACS) subtypes and the influence of potential confounding factors. Methods: All first-time hospital contacts for stroke (n=155,216) or ACS (n=97,799) were identified in Danish National Patient Registers and matched with 2 control groups of the background population. A hospital diagnosis of migraine and use of migraine medication were the main exposures and associations (odds ratios [OR]) were estimated using multiple logistic regression. Confounding was also addressed by including use of general headache medication as a negative control exposure. Results: The diagnosis of migraine was associated with increased odds of both stroke (ORcrude, age <50 years: 4.80 [95% CI: 3.75-6.21]; ORcrude, age ≥50 years:1.91 [95% CI: 1.67-2.19]) and ACS (ORcrude:1.88 [95% CI: 1.53-2.32]), while the ORs for the associations between migraine medication and stroke and ACS were lower. Patients with a diagnosis of migraine or redeemed migraine medication had increased ORs of all stroke subtypes (ischemic, hemorrhagic stroke and transient ischemic attacks). The diagnosis of migraine was also associated with both angina and myocardial infarction (ST-elevation Myocardial Infarction [STEMI], non-STEMI and unspecified) with the highest OR for angina. These associations were not fully explained by adjustment for confounding co-variables or when compared with the negative control exposure that were assumed to be influenced by similar confounding factors, but no shared pathogenesis. Conclusion: Hospital-diagnosed migraine was associated with all stroke and ACS subtypes, with ischemic stroke and angina having the highest odds. Confounding did not explain the associations.
KW - Journal Article
U2 - 10.2147/CLEP.S144441
DO - 10.2147/CLEP.S144441
M3 - Journal article
C2 - 28919819
SN - 1179-1349
VL - 9
SP - 439
EP - 449
JO - Clinical Epidemiology
JF - Clinical Epidemiology
ER -