Prevalence of dyslipidemia and correlation between blood lipid and metabolic factors among urbanized region residents in Hangzhou
Authors: Chengcheng Ma, Wenyun Dai, Wei Ding, Fang Hu
Journal: BMJ (2015)

Objective
To provide rationales for preventing and treating dyslipidemia by understanding the current status of lipids and related metabolic factors.


Methods
A total of 2 590 permanent residents aged ≥18 years were selected by random cluster sampling from three urbanized communities of Sijiqing Street. And the rate of abnormal lipid metabolism was calculated for different ages and genders. Spearman's correlation analyses were conducted for the levels of total cholesterol (TC), total triglyceride (TG), low density lipoprotein-cholesterol (LDL-C), high density lipoprotein-cholesterol (HDL-C), body mass index (BMI), waist circumference(WC), systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting plasma glucose (FPG), glycated hemoglobin (HbA1c) and uric acid (UA) levels. Both χ2 test and logisic regression were employed to examine the correlations between dyslipidemia and overweight/obesity, hypertension, hyperglycemia and hyperuricemia.


Results
①The total rate of abnormal lipid metabolism was 60.0%(1 554/2 590) with a standardized rate of 57.2%. High TC rate was 42.9%(1 111/2 590) with a standardized rate of 40.5%. And the edge incremental rate was 31.7%(822/2 590), the standardized rate 30.5%, the incremental rate 11.2%(289/2 590) and the standardized rate 10.0%. High TG rate was 33.0%(855/2 590) with a standardized rate of 30.7%. And the edge incremental rate was 15.3% (397/2 590), the standardized rate 14.3%, the incremental rate 17.7% (458/2 590) and the standardized rate 16.4%. High LDL-C rate was 30.4% (787/2 590) with a standardized rate of 28.4%. And the edge incremental rate was 22.9%(594/2 590), the standardized rate 21.7%, the incremental rate 7.5%(193/2 590) and the standardized rate 6.7%. Low HDL-C rate was 12.6% (327/2 590) with a standardized rate of 12.8%. The rates of high TC, high TG, high LDL-C, low HDL-C and abnormal lipid metabolism among gender showed no statistically significant difference (P>0.05); ② For both males & females, high TC rate, high TG rate, high LDL-C rate and total rate of abnormal lipid metabolism increased with age (P 0.05); ③Spearman's correlation analysis showed that the levels of TC, TG and LDL-C were positively correlated with BMI, WC, SBP, DBP, FBG, HbA1C and UA (all P<0.01) while the level of HDL-C had negative correlations with BMI, WC, SBP, DBP, FBG, HbA1c, and UA (all P<0.05); ④The total rate of abnormal lipid metabolism and various types of abnormal lipid metabolism increased with a rising level of BMI in the upward trend (trend test P<0.01), various types of abnormal lipid metabolism rate between different groups (elevated & non-elevated) of blood pressure, glucose and uric acid also were statistically significant (all P<0.05); ⑤ Non-conditional logistic regression analysis showed that, after adjusting for age and gender, overweight or obesity and hypertension were risk factors of high TC and high LDL-C; overweight or obesity, hyperuricemia was a risk factor for low HDL-C; overweight or obesity, hypertension, hyperglycemia and hyperuricemia were risk factors for high TG and total abnormal blood lipid.


Conclusions
Urbanized community groups have a high rate of dyslipidemia. And abnormal lipid metabolism is affected by overweight or obesity, hypertension, hyperglycemia and hyperuricemia. The target population should be regularly monitored and comprehensively controlled.


Key words: 
Dyslipidemias; Risk factors; Glucose metabolism disorders