TY - JOUR
T1 - The impact of atrial fibrillation and long-term oral anticoagulant use on all-cause and cardiovascular mortality
T2 - a 12-year evaluation of the prospective Brazilian Study of Stroke Mortality and Morbidity
AU - Goulart, Alessandra C
AU - Olmos, Rodrigo Diaz
AU - Santos, Itamar S
AU - Tunes, Gisela
AU - Alencar, Airlane P
AU - Thomas, Neil
AU - Lip, Gregory Yh
AU - Lotufo, Paulo A
AU - Benseñor, Isabela M
N1 - Publisher Copyright:
© 2021 World Stroke Organization.
PY - 2021/2/2
Y1 - 2021/2/2
N2 - BACKGROUND: Atrial fibrillation is a predictor of poor prognosis after stroke.AIMS: To evaluate atrial fibrillation and all-cause and cardiovascular mortality in a stroke cohort with low socioeconomic status, taking into consideration oral anticoagulant use during 12-year follow-up.METHODS: All-cause mortality was analyzed by Kaplan-Meier survival curve and Cox regression models to estimate hazard ratios and 95% confidence intervals (95% CI). For specific mortality causes, cumulative incidence functions were computed. A logit link function was used to calculate odds ratios (OR) with 95% CIs. Full models were adjusted by age, sex, oral anticoagulant use (as a time-dependent variable) and cardiovascular risk factors.RESULTS: Of 1121 ischemic stroke participants, 17.8% had atrial fibrillation. Overall, 654 deaths (58.3%) were observed. Survival rate was lower (median days, interquartile range-IQR) among those with atrial fibrillation (531, IQR: 46-2039) vs. non-atrial fibrillation (1808, IQR: 334-3301), p-log rank < 0.0001). Over 12-year follow-up, previous atrial fibrillation was associated with increased mortality: all-cause (multivariable hazard ratios, 1.82; 95% CI: 1.43-2.31) and cardiovascular mortality (multivariable OR, 2.07; 95% CI: 1.36-3.14), but not stroke mortality. In the same multivariable models, oral anticoagulant use was inversely associated with all-cause mortality (oral anticoagulant time-dependent effect: multivariable hazard ratios, 0.47; 95% CI: 0.30-0.50, p = 0.002) and stroke mortality (oral anticoagulant time-dependent effect ≥ 6 months: multivariable OR, 0.09; 95% CI: 0.01-0.65, p-value = 0.02), but not cardiovascular mortality.CONCLUSIONS: Among individuals with low socioeconomic status, atrial fibrillation was an independent predictor of poor survival, increasing all-cause and cardiovascular mortality risk. Long-term oral anticoagulant use was associated with a markedly reduced risk of all-cause and stroke mortality.
AB - BACKGROUND: Atrial fibrillation is a predictor of poor prognosis after stroke.AIMS: To evaluate atrial fibrillation and all-cause and cardiovascular mortality in a stroke cohort with low socioeconomic status, taking into consideration oral anticoagulant use during 12-year follow-up.METHODS: All-cause mortality was analyzed by Kaplan-Meier survival curve and Cox regression models to estimate hazard ratios and 95% confidence intervals (95% CI). For specific mortality causes, cumulative incidence functions were computed. A logit link function was used to calculate odds ratios (OR) with 95% CIs. Full models were adjusted by age, sex, oral anticoagulant use (as a time-dependent variable) and cardiovascular risk factors.RESULTS: Of 1121 ischemic stroke participants, 17.8% had atrial fibrillation. Overall, 654 deaths (58.3%) were observed. Survival rate was lower (median days, interquartile range-IQR) among those with atrial fibrillation (531, IQR: 46-2039) vs. non-atrial fibrillation (1808, IQR: 334-3301), p-log rank < 0.0001). Over 12-year follow-up, previous atrial fibrillation was associated with increased mortality: all-cause (multivariable hazard ratios, 1.82; 95% CI: 1.43-2.31) and cardiovascular mortality (multivariable OR, 2.07; 95% CI: 1.36-3.14), but not stroke mortality. In the same multivariable models, oral anticoagulant use was inversely associated with all-cause mortality (oral anticoagulant time-dependent effect: multivariable hazard ratios, 0.47; 95% CI: 0.30-0.50, p = 0.002) and stroke mortality (oral anticoagulant time-dependent effect ≥ 6 months: multivariable OR, 0.09; 95% CI: 0.01-0.65, p-value = 0.02), but not cardiovascular mortality.CONCLUSIONS: Among individuals with low socioeconomic status, atrial fibrillation was an independent predictor of poor survival, increasing all-cause and cardiovascular mortality risk. Long-term oral anticoagulant use was associated with a markedly reduced risk of all-cause and stroke mortality.
KW - Stroke epidemiology
KW - stroke in developing countries
KW - stroke prevention
UR - http://www.scopus.com/inward/record.url?scp=85101823094&partnerID=8YFLogxK
U2 - 10.1177/1747493021995592
DO - 10.1177/1747493021995592
M3 - Article
C2 - 33527882
SN - 1747-4930
JO - International Journal of Stroke
JF - International Journal of Stroke
ER -