| Objective: To study the current state of cardiovascular disease risk factors among schoolchildren living in rural area of China. Method: Height, weight, blood pressure (BP) were measured in 1007children aged 7-14 years old in rural area of China. Fasting serum glucose (FSG), total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C) were determined with the 12-14 hour fasting blood. The simple obesity and low-density lipoprotein cholesterol (LDL-C) were calculated by the way of"weight for height norms"and Friedwalds formulary{LDL-C=TCï¼(HDL-C)ï¼TGï¼2.2}. All participants filled out a questionnaire about the lifestyle of children and the family history of cardiovascular disease. All statistical analyses were performed using SPSS, version 10.0. Simple descriptive statistics (means and deviation) were used to analyze blood pressure, blood lipids and FSG levels. The prevalence of hypertension, abnormal blood lipids, impaired fasting serum glucose and obesity of children were calculated according to judgment criterion used usually in China and other countries.Differences of blood pressure (BP), blood lipids and FSG in sex-age groups were compared with analysis of variance (ANOVA). Differences of BP, blood lipids and FSG between normal weight children and obese children were compared with student test. Differences of BP, blood lipids and FSG among different degree obese children were compared with ANOVA. Prevalence of hypertension, abnormal serum lipids and impaired FSG in sex-age groups were analyzed with Chi-square test. Relation between the family history of cardiovascular disease, obesity, habit of diet, tension and blood pressure, serum lipids, FSG were analyzed.Result: The level of BP was increased with age. The 95% confidence intervals (CI) for systolic pressure (SBP) and diastolic pressure (DBP) was 105~107 mmHg and 68~70 mmHg in children aged 7-14 respectively. No significant differences of levels of SBP, DBP existed between boys and girls except the 10 year old boys who had significantly higher DBP than girls did (P<0.05). Significant differences in the levels of BP were observed among the different age groups in boys and girls (P<0.05). Prevalence of high blood pressure was 8.03% in total children. Prevalence of hypertension in the children with positive family history of hypertension, obesity, tension, excessive salt intake was 12.58%, 39.47%, 10.85%, 14.01% respectively. The 95%confidence intervals of TC, TG, HDL-C and LDL-C was 3.74~4.17mmol/L, 0.86~0.99mmol/L, 1.36~1.54mmol/L and 1.87~2.30mmol/L respectively. TC and LDL-C levels decreased with the increasing of age in 7-13 years old and rose rapidly at the age of 14 in boys and girls. No significant differences of TC, LDL-C between boys and girls were observed except 7 year old girls whose TC, LDL-C were significantly higher than boys' (P<0.05). TG levels rose with the increasing of age. Girls'TG was higher than boys' in each age group, but by ANOVA analysis, no significant differences existed between boys and girls except at the age of 12 and 13 (P<0.05). HDL-C levels decreased with the increasing of age. No significant difference of HDL-C existed between boys and girls in each age group (P>0.05). Significant difference of HDL-C existed among age groups in boys and girls (P<0.05). Significant difference existed only among age groups in girls for TG (P<0.05), but no significant differences of TC, LDL-C existed among age groups in boys and girls (P>0.05). 19.29% of the children was abnormal at one or more blood lipids index. 17.53% of the children exceeded the recommended criteria of dietary intervention. The prevalence of abnormal blood lipids was 24.72%, 35.62%, 33.33% for the children who had positive family history of high blood lipids, obesity, eating animal oil , respectively. The 95% CI of FSG was 4.88~4.96mmol/L in 7-14 year old children. FSG levels rose with the growth of age. No significant difference existed between boys and girls in each age-group...
|
PDF Full Text Request