Mortality after hospital admission for heart failure: improvement over time, equally strong in women as in men

BACKGROUND: To assess the trend in age- and sex-stratified mortality after hospitalization for heart failure (HF) in the Netherlands.

METHODS: Two nationwide cohorts of patients, hospitalized for new onset heart failure between 01.01.2000-31.12.2002 and between 01.01.2008-31.12.2010, were constructed by linkage of the Dutch Hospital Discharge Registry and the National Cause of Death registry. 30-day, 1-year and 5 -year overall and cause-specific mortality rates stratified by age and sex were assessed and compared over time.

RESULTS: We identified 40,230 men and 41,582 women. In both cohorts, men were on average younger than women (74-75 and 78-79 years, respectively) and more often had comorbid conditions (37 and 30%, respectively). In the 2008-10 cohort, mortality rates for men were 13, 32 and 64% for respectively 30-day, 1-year and 5-year mortality and 14, 33 and 66% for women. Mortality rates increased considerably with age similarly in men and women (e.g. from 10.5% in women aged 25-54 to 46.1% in those aged 85 and older after 1 year). Between the two time periods, mortality rates dropped across all ages, equally strong in women as in men. The 1-year absolute risk of death declined by 4.0% (from 36.1 to 32.1%) in men and 3.2% (from 36.2 to 33.0%) in women.

CONCLUSIONS: Mortality after hospitalization for new onset HF remains high, however, both short-term and long-term survival is improving over time. This improvement was similar across all ages and equally strong in women as in men.