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[Threshold values for hypercholesterolemia: single values or percentiles?].

L U Gerdes1

  • 1Arhus Amtssygehus, medicinsk afdeling I.

Ugeskrift for Laeger
|June 11, 1990
PubMed
Summary
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Serum cholesterol levels vary by age and sex. Using population-wide percentiles, rather than single thresholds, better identifies individuals with hypercholesterolemia for targeted treatment.

Area of Science:

  • Cardiovascular epidemiology
  • Clinical biochemistry

Background:

  • Serum cholesterol distribution is influenced by sex and age.
  • Hypercholesterolemia classification impacts population health assessments.

Purpose of the Study:

  • To evaluate the impact of sex and age on hypercholesterolemia classification.
  • To compare single threshold values with sex- and age-specific percentiles for defining hypercholesterolemia.

Main Methods:

  • Analysis of serum cholesterol data from the Copenhagen City Heart Study (1981-1983).
  • Inclusion of men and women aged 20-69.
  • Comparison of classification using fixed thresholds (7 mmol/l; 6 mmol/l for <30 years) versus 90-percentiles.

Main Results:

  • Single thresholds result in 56% of hypercholesterolemic subjects being women, with 38% aged 50-59.

Related Experiment Videos

  • Men aged 30-59, a group with high risk for ischemic heart disease, constitute only 28% of hypercholesterolemic subjects.
  • Sex- and age-specific 90-percentiles identify younger hypercholesterolemic individuals and allow for more precise population stratification.

    • Conclusions:

    • Standard hypercholesterolemia thresholds are biased by sex and age distributions.
    • Sex- and age-specific percentiles offer a more equitable and effective method for identifying hypercholesterolemia.
    • Utilizing percentile-based classification can optimize resource allocation for hypercholesterolemia treatment.