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Comparison of cardiovascular events among treatments for overactive bladder: a Danish nationwide cohort study.
European Journal of Clinical Pharmacology 2018 Februrary
PURPOSE: The purpose of this study is to explore the cardiovascular safety of antimuscarinic drugs to treat overactive bladder (OAB) in Denmark.
METHODS: This was a cohort study using data recorded in Danish registries from patients newly exposed to darifenacin, fesoterodine, oxybutynin, solifenacin, tolterodine, or trospium in 2004-2012. We estimated crude and standardized incidence rates (IRs) for acute myocardial infarction (AMI); stroke; cardiovascular mortality; major adverse cardiac events (MACE, a combined endpoint of the previous three outcomes); and all-cause death for the individual and combined drugs. We also estimated crude, standardized, and propensity score-stratified incidence rate ratios (IRRs) comparing individual antimuscarinic drugs to tolterodine as the reference.
RESULTS: Among 72,917 new users of OAB drugs (mean age, 66 years; 60% women), the standardized IR (95% confidence interval) per 1000 person-years for current use of any OAB drug was 2.7 (2.5-2.9) for AMI, 1.3 (1.2-1.5) for stroke, 7.8 (7.5-8.1) for MACE, 4.8 (4.5-5.0) for cardiovascular mortality, and 15.2 (14.8-15.6) for all-cause mortality. Propensity score-stratified IRRs for current use (reference, tolterodine) were close to the null for all drugs and endpoints.
CONCLUSIONS: We did not identify differences in the risk of cardiovascular events or mortality among users of individual antimuscarinic OAB drugs.
METHODS: This was a cohort study using data recorded in Danish registries from patients newly exposed to darifenacin, fesoterodine, oxybutynin, solifenacin, tolterodine, or trospium in 2004-2012. We estimated crude and standardized incidence rates (IRs) for acute myocardial infarction (AMI); stroke; cardiovascular mortality; major adverse cardiac events (MACE, a combined endpoint of the previous three outcomes); and all-cause death for the individual and combined drugs. We also estimated crude, standardized, and propensity score-stratified incidence rate ratios (IRRs) comparing individual antimuscarinic drugs to tolterodine as the reference.
RESULTS: Among 72,917 new users of OAB drugs (mean age, 66 years; 60% women), the standardized IR (95% confidence interval) per 1000 person-years for current use of any OAB drug was 2.7 (2.5-2.9) for AMI, 1.3 (1.2-1.5) for stroke, 7.8 (7.5-8.1) for MACE, 4.8 (4.5-5.0) for cardiovascular mortality, and 15.2 (14.8-15.6) for all-cause mortality. Propensity score-stratified IRRs for current use (reference, tolterodine) were close to the null for all drugs and endpoints.
CONCLUSIONS: We did not identify differences in the risk of cardiovascular events or mortality among users of individual antimuscarinic OAB drugs.
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