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Distribution and determinants of serum creatinine in the general population: the Hordaland Health Study
B E Vikse1, S E Vollset, G S Tell
1Renal Research Group, Institute of Medicine, University of Bergen, Norway. bjorn.vikse@med.uib.no
Insights
Serum creatinine levels are linked to cardiovascular disease (CVD) risk factors. These associations are stronger in older adults, with lifestyle factors being more influential in middle-aged individuals.
Area of Science:
- Nephrology
- Cardiology
- Public Health
Background:
- Serum creatinine is a recognized cardiovascular disease (CVD) risk factor and a measure of glomerular filtration rate.
- Understanding serum creatinine determinants in the general population is crucial for public health.
Purpose of the Study:
- To investigate the determinants of serum creatinine in a large, diverse general population sample.
- To explore age- and sex-specific associations between serum creatinine and various health and lifestyle factors.
Main Methods:
- The Hordaland Health Study included over 18,000 participants across different age groups (41-49 and 71-74 years) and sexes.
- Data collection involved questionnaires on lifestyle and medical history, physical examinations, and non-fasting blood samples.
- Multiple linear and logistic regression analyses were employed to identify determinants of serum creatinine.
Main Results:
- Male and older participants exhibited higher serum creatinine levels.
- In older adults, creatinine correlated with triglycerides, CVD, upper-arm circumference, and antihypertensive use, and inversely with smoking.
- In middle-aged individuals, creatinine was associated with upper-arm circumference, lipids, exercise, and inversely with smoking and alcohol intake.
Conclusions:
- High serum creatinine is associated with CVD risk factors in the general population.
- These associations are more pronounced in older individuals.
- Lifestyle variables play a relatively greater role in determining serum creatinine in middle-aged subjects.
Background:
Serum creatinine is a well-recognized risk factor for cardiovascular disease (CVD) and is also a rough measure of glomerular filtration rate. The purpose of the present study was to investigate determinants of serum creatinine in the general population.
Methods:
The participants were recruited as a part of the Hordaland Health Study, and included 6952 men aged 41-49 years, 8218 women aged 41-49 years, 1470 men aged 71-74 years and 1865 women aged 71-74 years. Data on lifestyle factors, medical history and medication were obtained through questionnaires. Body size and blood pressure measurements as well as non-fasting blood samples were obtained during a health examination. Determinants of serum creatinine were identified using multiple linear and logistic regression analyses.
Results:
Male and older participants had higher levels of serum creatinine than female and middle-aged participants. For older participants, creatinine was associated with serum triglycerides, CVD, upper-arm circumference and use of antihypertensive drugs as well as inversely associated with cigarette smoking. For middle-aged participants, creatinine was associated with upper-arm circumference, serum lipids and physical exercise, as well as inversely associated with smoking and alcohol intake. The associations with CVD risk factors were much stronger for older participants than for middle-aged participants and most associations were significant after adjustments as well as present within the reference range of serum creatinine.
Conclusions:
In this general population sample, high serum creatinine levels were associated with risk factors for CVD. These associations were stronger in older subjects, whereas in middle-aged subjects lifestyle variables were relatively more important.
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