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Eur J Prev Cardiol. 2014 Nov;21(11):1420-8. doi: 10.1177/2047487313494292. Epub 2013 Jun 17.

LDL-cholesterol versus non-HDL-to-HDL-cholesterol ratio and risk for coronary heart disease in type 2 diabetes.

Author information

1
Department of Medicine, Sahlgrenska University Hospital, University of Gothenburg, Sweden.
2
Department of Public Health and Caring Sciences / Geriatrics, Uppsala University, Sweden bjorn.eliasson@gu.se.
3
Department of Public Health and Caring Sciences / Family Medicine and Preventive Mecicine, Uppsala University, Sweden.

Abstract

AIMS:

We assessed the association between different blood lipid measures and risk of fatal/nonfatal coronary heart disease (CHD), which has been less analysed previously in type 2 diabetes.

DESIGN, METHODS:

Observational study of 46,786 patients with type 2 diabetes, aged 30-70 years, from the Swedish National Diabetes Register, followed for a mean of 5.8 years until 2009. Baseline and updated mean low-density lipoprotein (LDL)-, high-density lipoprotein (HDL)-, non-HDL-cholesterol, and non-HDL-to-HDL-cholesterol ratio were measured.

RESULTS:

Hazard ratios (HR) for CHD with quartiles 2-4 of baseline lipid measures, with lowest quartile 1 as reference: 1.03-1.29-1.63 for LDL; 1.23-1.41-1.95 for non-HDL; 1.29-1.39-1.57 for HDL; and 1.31-1.67-2.01 for non-HDL:HDL, all p < 0.001 except for quartile 2 of LDL, when adjusted for clinical characteristics and nonlipid risk factors. A similar picture was seen with updated mean values. Splines with absolute 6-year CHD rates in a Cox model showed decreasing rates only down to around 3 mmol/l for LDL, with linearly decreasing rates to the lowest level of non-HDL:HDL. Non-HDL and HDL were independent additive risk factors for CHD risk. HRs per 1 SD continuous decrease in baseline or updated mean HDL were 1.14-1.17 when fully adjusted as above, and 1.08-1.13 when also adjusted for non-HDL (p < 0.001). HRs were 1.13-1.16 adjusted for LDL, and 1.22-1.26 adjusted for total cholesterol and triglycerides (p < 0.001). Splines showed progressively increasing 6-year CHD rates with lower HDL down to 0.5 mmol/l.

CONCLUSIONS:

This study suggests that lower levels of non-HDL:HDL are a better risk marker for CHD than LDL-cholesterol below 3 mmol/l.

KEYWORDS:

Diabetes mellitus; LDL-cholesterol; coronary heart disease; epidemiology; human; lipoproteins; non-HDL-cholesterol

PMID:
23774274
DOI:
10.1177/2047487313494292
[Indexed for MEDLINE]

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