Hyponatremia epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

Hyponatremia is the most common electrolyte disorder. Its frequency is higher in females, the elderly, and in patients who are hospitalized. The incidence of hyponatremia depends largely on the patient population. A hospital incidence of 15–20% is common, while only 3–5% of patients who are hospitalized have a serum sodium level of less than 130 mEq/L. Hyponatremia has been reported in up to 30% of elderly patients in nursing homes and is also present in approximately 30% of depressed patients on selective serotonin reuptake inhibitors.

Epidemiology and Demographics

Incidence

• The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
• In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.

Prevalence

• Hyponatremia is the most common electrolyte disturbances encountered in clinical practice, occurring in 15%-30% of acutely or chronically hospitalized patients.

• The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
• In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.
• The prevalence of [disease/malignancy] is estimated to be [number] cases annually.

Case-fatality rate/Mortality rate

• In [year], the incidence of [disease name] is approximately [number range] per 100,000 individuals with a case-fatality rate/mortality rate of [number range]%.
• The case-fatality rate/mortality rate of [disease name] is approximately [number range].

Age

• Patients of all age groups may develop [disease name].
• The incidence of [disease name] increases with age; the median age at diagnosis is [#] years.
• [Disease name] commonly affects individuals younger than/older than [number of years] years of age.
• [Chronic disease name] is usually first diagnosed among [age group].
• [Acute disease name] commonly affects [age group].

Race

• There is no racial predilection to [disease name].
• [Disease name] usually affects individuals of the [race 1] race. [Race 2] individuals are less likely to develop [disease name].

Gender

• [Disease name] affects men and women equally.
• [Gender 1] are more commonly affected by [disease name] than [gender 2]. The [gender 1] to [gender 2] ratio is approximately [number > 1] to 1.

Region

• The majority of [disease name] cases are reported in [geographical region].

• [Disease name] is a common/rare disease that tends to affect [patient population 1] and [patient population 2].