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Published on: January 28, 2014
Statistical epidemiological screening methods assessing certain biochemical markers
Doina Azoicăi1, L V Boiculese, C Rezuş
1Department of Epidemiology, School of Medicine, University of Medicine and Pharmacy Gr.T. Popa, Iaşi.
Insights
This study establishes normal serum biochemical marker ranges for cardiovascular disease risk in Iaşi City adults. Mean values for total cholesterol, total lipids, triglycerides, glycemia, and urea were determined in a healthy population sample.
Area of Science:
- Biochemistry
- Epidemiology
- Public Health
Background:
- Defining normal serum biochemical marker ranges for cardiovascular diseases (CVDs) like total cholesterol (TC), total lipids (TL), triglycerides (TG), glycemia (G), and urea (U) is challenging.
- Epidemiological studies highlight the difficulty in establishing universally accepted
- normal
- values for these predictive CVD markers.
Purpose of the Study:
- To establish mean and limit values for serum biochemical markers (TC, TL, TG, G, U) in an adult population from Iaşi City.
- To provide reference values for interpreting CVD risk based on biochemical data in this specific region.
- To assess the influence of age and sex on these biochemical markers.
Main Methods:
- Epidemiological screening methodology employed over 5 years, involving 2788 biochemical determinations.
- Data analysis using the EpiInfo computer program to interpret results.
- Differentiated analysis of data from apparently healthy individuals (n=2691) and those with diagnosed diabetes mellitus or CVDs (n=97).
Main Results:
- Mean values in apparently healthy individuals (aged 20-60) were: TC 210 mg%, TL 6.74 g@1000, TG 125.74 mg%, G 0.91 g%, and U 0.34 g%.
- Significant correlations were observed between age and TC (r=0.38), TG (r=0.26), and G (r=0.23).
- No significant differences in mean values were found between males and females for any assessed marker (p > 0.05).
Conclusions:
- The established mean and limit values serve as crucial reference points for CVD risk assessment in the Iaşi City population.
- These findings will aid clinicians and community health studies in interpreting biochemical marker data more accurately within the regional context.
- The study underscores the importance of localized epidemiological data for precise health risk evaluation.
Abstract:
The epidemiological studies have shown that it is difficult to define a "normal" value for the serum concentration of some biochemical markers with predictive significance for cardiovascular diseases (CVDs) as follows: total cholesterol (TC), total lipids (TL), triglycerides (TG), glycemia (G), and urea (U). Our study establishes the mean and limit values of the normality for the above mentioned markers, in an adult population from the Iaşi City, using the epidemiological screening method. The employed methodology includes the records of the results of 2788 biochemical determinations during a period of 5 years, in order to assess the state of health of the population, as well the data working up and interpretation by means of the EpiInfo computer program. By testing a series of "normal" limits, the values found with apparent healthy persons (n = 2691) and persons previously diagnosed with diabetes mellitus or CVDs (n = 97) were analyzed in a differentiated way. In the sample of apparent healthy individuals, with the age between 20 and up to 60, the mean values were: 210 mg% for TC; 6.74 g@1000--TL; 125.74 mg%--TG; 0.91 g%--G and 0.34 g%--U. Satisfactory correlations (correlation coefficient-"r") of age with the values of TC (r = 0.38); TG (r = 0.26) and G (r = 0.23) comparatively with U (r = 0.15) or TL (r = 0.14) were noticed. The comparison of the mean values between males and females did not reveal a significant difference (p > 0.05) for any of the assessed constants. The clinical and community studies of the CVD risk assessed in the Iaşi City area will have to be referred to the registered and analyzed values of this epidemiological screening in the interpretation of some biochemical markers data.
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