Excess mortality associated with eating disorders: population-based cohort study.

Area of Science:

• Public Health
• Epidemiology
• Clinical Medicine

Background:

• Eating disorders are associated with substantial mortality risks.
• Limited population-based data exist for mortality in bulimia nervosa and eating disorder not otherwise specified.
• Hospital-based care data provide a crucial window into severe eating disorder outcomes.

Purpose of the Study:

• To determine all-cause mortality rates in a population-based cohort of individuals receiving hospital-based care for eating disorders.
• To compare mortality risks across different eating disorder diagnoses (anorexia nervosa, bulimia nervosa, eating disorder not otherwise specified).
• To investigate factors influencing mortality risk in this population.

Main Methods:

• Retrospective cohort study utilizing administrative healthcare data from Ontario, Canada (1990-2013).
• Inclusion of 19,041 individuals diagnosed with an eating disorder.
• Assessment of excess mortality using standardized mortality ratios (SMRs) and potential years of life lost (PYLL).

Main Results:

• The overall cohort experienced a five-fold higher mortality rate than the general Ontario population (SMR = 5.06).
• Males with eating disorders had a higher SMR (7.24) compared to females (4.59).
• Potential years of life lost (PYLL) were over six times higher for the cohort than expected.

Conclusions:

• Hospital-diagnosed eating disorder patients exhibit 5-7 times higher mortality rates compared to the general population.
• Significant excess mortality underscores the severity of eating disorders.
• Further research into mortality risk factors is essential for improving patient outcomes.