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Time trends in incidence, comorbidity, and mortality of ischemic stroke in Denmark, 1996-2016

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@article{cfbdd87ec4be41198c075feb4b12df4e,
title = "Time trends in incidence, comorbidity, and mortality of ischemic stroke in Denmark, 1996-2016",
abstract = "OBJECTIVE: To examine whether the incidence, comorbidity, and mortality of first-time ischemic stroke changed in Denmark between 1996 and 2016 overall and according to age and sex using a nationwide cohort design. METHODS: In this cohort study, 224,617 individuals ≥18 years of age admitted with first-time ischemic stroke between 1996 and 2016 were identified through Danish nationwide registries. We calculated annual age-standardized incidence rates and absolute 30-day and 1-year mortality risks. Furthermore, we calculated annual incidence rate ratios using Poisson regression, odds ratios for 30-day mortality using logistic regression, and hazard ratios for 1-year mortality using Cox regression. RESULTS: The overall age-standardized incidence rates of ischemic stroke per 1,000 person-years increased from 1996 (2.70 [95% confidence interval [CI] 2.65-2.76]) to 2002 (3.25 [95% CI 3.20-3.31]) and then gradually decreased to below the initial level until 2016 (1.99 [95% CI 1.95-2.02]). Men had higher incidence rates than women in all age groups except 18 to 34 and ≥85 years. Absolute mortality risk decreased between 1996 and 2016 (30-day mortality from 17.1% to 7.6% and 1-year mortality from 30.9% to 17.3%). Women between 55 and 64 and ≥85 years of age had higher mortality than men. Similar trends were observed for all analyses after multivariable adjustment. The prevalence of atrial fibrillation, hypertension, diabetes mellitus, and use of lipid-lowering medication increased during the study period. CONCLUSIONS: The age-standardized incidence of first-time hospitalization for ischemic stroke increased from 1996 to 2002 and then gradually decreased to below the initial level until 2016. Absolute 30-day and 1-year mortality risks decreased between 1996 and 2016. These findings correspond to increased stroke prevention awareness and introduction of new treatments during the study period.",
author = "Adelina Yafasova and Fosb{\o}l, {Emil Loldrup} and Christiansen, {Mia Nielsen} and Vinding, {Naja Emborg} and Charlotte Andersson and Christina Kruuse and Johnsen, {S{\o}ren Paaske} and Gislason, {Gunnar Hilmar} and Christian Torp-Pedersen and Lars K{\o}ber and Butt, {Jawad Haider}",
note = "{\textcopyright} 2020 American Academy of Neurology.",
year = "2020",
month = oct,
day = "27",
doi = "10.1212/WNL.0000000000010647",
language = "English",
volume = "95",
pages = "e2343--e2353",
journal = "Neurology",
issn = "0028-3878",
publisher = "Lippincott Williams & Wilkins",
number = "17",

}

RIS

TY - JOUR

T1 - Time trends in incidence, comorbidity, and mortality of ischemic stroke in Denmark, 1996-2016

AU - Yafasova, Adelina

AU - Fosbøl, Emil Loldrup

AU - Christiansen, Mia Nielsen

AU - Vinding, Naja Emborg

AU - Andersson, Charlotte

AU - Kruuse, Christina

AU - Johnsen, Søren Paaske

AU - Gislason, Gunnar Hilmar

AU - Torp-Pedersen, Christian

AU - Køber, Lars

AU - Butt, Jawad Haider

N1 - © 2020 American Academy of Neurology.

PY - 2020/10/27

Y1 - 2020/10/27

N2 - OBJECTIVE: To examine whether the incidence, comorbidity, and mortality of first-time ischemic stroke changed in Denmark between 1996 and 2016 overall and according to age and sex using a nationwide cohort design. METHODS: In this cohort study, 224,617 individuals ≥18 years of age admitted with first-time ischemic stroke between 1996 and 2016 were identified through Danish nationwide registries. We calculated annual age-standardized incidence rates and absolute 30-day and 1-year mortality risks. Furthermore, we calculated annual incidence rate ratios using Poisson regression, odds ratios for 30-day mortality using logistic regression, and hazard ratios for 1-year mortality using Cox regression. RESULTS: The overall age-standardized incidence rates of ischemic stroke per 1,000 person-years increased from 1996 (2.70 [95% confidence interval [CI] 2.65-2.76]) to 2002 (3.25 [95% CI 3.20-3.31]) and then gradually decreased to below the initial level until 2016 (1.99 [95% CI 1.95-2.02]). Men had higher incidence rates than women in all age groups except 18 to 34 and ≥85 years. Absolute mortality risk decreased between 1996 and 2016 (30-day mortality from 17.1% to 7.6% and 1-year mortality from 30.9% to 17.3%). Women between 55 and 64 and ≥85 years of age had higher mortality than men. Similar trends were observed for all analyses after multivariable adjustment. The prevalence of atrial fibrillation, hypertension, diabetes mellitus, and use of lipid-lowering medication increased during the study period. CONCLUSIONS: The age-standardized incidence of first-time hospitalization for ischemic stroke increased from 1996 to 2002 and then gradually decreased to below the initial level until 2016. Absolute 30-day and 1-year mortality risks decreased between 1996 and 2016. These findings correspond to increased stroke prevention awareness and introduction of new treatments during the study period.

AB - OBJECTIVE: To examine whether the incidence, comorbidity, and mortality of first-time ischemic stroke changed in Denmark between 1996 and 2016 overall and according to age and sex using a nationwide cohort design. METHODS: In this cohort study, 224,617 individuals ≥18 years of age admitted with first-time ischemic stroke between 1996 and 2016 were identified through Danish nationwide registries. We calculated annual age-standardized incidence rates and absolute 30-day and 1-year mortality risks. Furthermore, we calculated annual incidence rate ratios using Poisson regression, odds ratios for 30-day mortality using logistic regression, and hazard ratios for 1-year mortality using Cox regression. RESULTS: The overall age-standardized incidence rates of ischemic stroke per 1,000 person-years increased from 1996 (2.70 [95% confidence interval [CI] 2.65-2.76]) to 2002 (3.25 [95% CI 3.20-3.31]) and then gradually decreased to below the initial level until 2016 (1.99 [95% CI 1.95-2.02]). Men had higher incidence rates than women in all age groups except 18 to 34 and ≥85 years. Absolute mortality risk decreased between 1996 and 2016 (30-day mortality from 17.1% to 7.6% and 1-year mortality from 30.9% to 17.3%). Women between 55 and 64 and ≥85 years of age had higher mortality than men. Similar trends were observed for all analyses after multivariable adjustment. The prevalence of atrial fibrillation, hypertension, diabetes mellitus, and use of lipid-lowering medication increased during the study period. CONCLUSIONS: The age-standardized incidence of first-time hospitalization for ischemic stroke increased from 1996 to 2002 and then gradually decreased to below the initial level until 2016. Absolute 30-day and 1-year mortality risks decreased between 1996 and 2016. These findings correspond to increased stroke prevention awareness and introduction of new treatments during the study period.

U2 - 10.1212/WNL.0000000000010647

DO - 10.1212/WNL.0000000000010647

M3 - Journal article

C2 - 32817180

VL - 95

SP - e2343-e2353

JO - Neurology

JF - Neurology

SN - 0028-3878

IS - 17

ER -

ID: 60937186