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Updated: Jul 2, 2026

A Point-of-Care Method with Integrated Decision Support Tool to Estimate Anemia at Population Level
Published on: January 19, 2024
[Prevalence and causes of anemia in a city general practice]
1Hausarztpraxis, Innere Medizin, Luzern. merlo.c@bluewin.ch
Insights
Anemia affects 6% of elderly patients in city general practices. Chronic renal failure is the most common cause, but multiple factors often contribute, highlighting the complexity of anemia in older adults.
Area of Science:
- Geriatric Medicine
- Hematology
- Internal Medicine
Context:
- Anemia is a common condition in the elderly, affecting 6% of patients in a city general practice setting.
- The study utilized World Health Organization (WHO) criteria for anemia diagnosis.
- The median age of the anemic patient cohort was 77 years.
Purpose:
- To investigate the prevalence and etiological factors of anemia in an elderly urban general practice population.
- To evaluate an algorithm for diagnosing anemia causes, incorporating patient history and laboratory tests.
- To compare findings with existing literature on anemia in primary care settings.
Summary:
- Anemia was identified in 6% of 854 patients, with chronic renal failure being the most frequent cause (21%).
- Other significant causes in this elderly cohort included iron deficiency, chronic disease, and malignancy.
- A substantial 35% of patients presented with multiple contributing factors to their anemia.
- Diagnostic evaluation involved a structured approach including mean corpuscular volume (MCV) and specific laboratory tests based on clinical presentation.
Impact:
- Highlights the significant prevalence and multifactorial nature of anemia in the elderly population within a general practice context.
- Provides insights into the diagnostic challenges and common etiologies of anemia in older adults.
- Informs clinical practice regarding the comprehensive evaluation of anemia in geriatric patients.
Abstract:
In 6% of 854 patients in a city general practice anemia was found. Anemia was defined by WHO criteria. An algorithm for the evaluation of the cause includes patient's history and laboratory investigations inclusive of reticulocyte count, serum ferritin with CRP, serum vitamin B12, serum or erythrocyte folate and serum creatinine, depending on clinical situation and mean corpuscular volume (MCV). Median age of the patients was 77 years. The most frequent underlying cause of anemia was chronic renal failure (in 21%). According to the high patient's age, iron deficiency, chronic disease and malignancy were frequent for anemia, too. 35% of patients had more than one cause of anemia. The results are compared with other sparse reports from general practices and are discussed regarding the particular situation in the elderly.
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