Hyperglycaemia is associated with all-cause and cardiovascular mortality in the Hoorn population: the Hoorn Study

Diabetologia. 1999 Aug;42(8):926-31. doi: 10.1007/s001250051249.

Abstract

Aims/hypothesis: The degree of glycaemia has been shown to be associated with all-cause and cardiovascular mortality in diabetic subjects. Whether this association also exists in the general population is still controversial. We studied the predictive value of fasting plasma glucose, 2-hour post-load glucose and HbA1c in a population-based cohort of 2363 older (50-75 years) subjects, without known diabetes.

Methods: Relative risks (RR) of all-cause and cardiovascular mortality were estimated by Cox proportional hazards model, adjusting for age and sex, and additionally for known cardiovascular risk factors.

Results: During 8 years of follow-up, 185 subjects died; 98 of cardiovascular causes. Fasting plasma glucose was only predictive in the diabetic range, although the risks started to increase at about 6.1 mmol/l. Post-load glucose and HbA1c values were, even within the non-diabetic range, associated with an increased risk (p for linear trend < 0.05). These increased risks were mostly, but not completely, attributable to known cardiovascular risk factors. After exclusion of subjects with newly diagnosed diabetes or with pre-existent cardiovascular disease (n = 551), a 5.8 mmol/l increase of post-load glucose (corresponding to two standard deviations of the population distribution) was associated with a higher age-adjusted and sex-adjusted risk of all-cause (RR 2.24) and cardiovascular mortality (RR 3.40) (p < 0.05). After additional adjustment for known cardiovascular risk factors, these relative risks were still statistically significant, with values of 2.20 and 3.00 respectively (p < 0.05).

Conclusion/interpretation: High glycaemic variables, especially 2-h post-load glucose concentrations and to a lesser extent HbA1c values, indicate a risk of all-cause and cardiovascular mortality in a general population without known diabetes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Blood Glucose / analysis
  • Blood Glucose / metabolism
  • Cardiovascular Diseases / mortality*
  • Cohort Studies
  • European Continental Ancestry Group
  • Fasting
  • Female
  • Follow-Up Studies
  • Glucose Tolerance Test
  • Glycated Hemoglobin A / analysis
  • Humans
  • Hyperglycemia / blood
  • Hyperglycemia / diagnosis
  • Hyperglycemia / epidemiology*
  • Male
  • Middle Aged
  • Netherlands / epidemiology
  • Patient Selection
  • Predictive Value of Tests
  • Risk Assessment
  • Risk Factors
  • Smoking
  • Urban Population

Substances

  • Blood Glucose
  • Glycated Hemoglobin A