Abstract:
Objective To analyze the relationship between different obesity indicators and hypertension in Fujian Province, and to explore the predictive value of different obesity indicators for hypertension. Methods Using data from the National 12th Five-Year Plan’s Prevalence Survey and Key Technology Study of Important Cardiovascular Diseases in China database from August 2014 to July 2016. This research was a cross-sectional survey with stratified multi-stage random sampling. A total of 14 152 people over 18 years old with complete data related to obesity indicators were selected. Binary logistic regression was used to analyze the relationship between body mass index, body fat rate, waist circumference, waist-to-height ratio, visceral fat index(VFI), and hypertension. Receiver operating characteristic(ROC) was used to analyze the predictive efficacy of a single obesity evaluation indicator and the combination of general and central obesity evaluation indicators for hypertension. Results There were 4 482 cases of hypertension in this study, with a prevalence rate of 31.67%. Body mass index, body fat rate, waist circumference, waist-to-height ratio and VFI in hypertension group were higher than non-hypertension group(all P<0.001). With the increase of body mass index, body fat rate, waist circumference, waist-to-height ratio, and VFI, the prevalence of hypertension increased(all P<0.001). Logistic regression analysis showed that body mass index, body fat rate, waist circumference, waist-to-height ratio, and VFI were correlated with hypertension(P<0.05). ROC curve showed that the area under the curve(AUC) of all indicators in the whole population, male and female were over 0.6, and the best predictive power in the whole population, male and female was waist-to-height ratio(AUC=0.720, 95%CI 0.711-0.729), body fat rate(AUC=0.694, 95%CI 0.681-0.707) and waist-to-height ratio(AUC=0.754, 95%CI 0.742-0.766), respectively. For the combination of indicators, body mass index combined with waist-to-height ratio(AUC=0.725, 95%CI 0.717-0.734), body fat rate combined with waist-to-height ratio(AUC=0.703, 95%CI 0.690-0.715) had the best predictive effect in the whole population and males, respectively. AUC of all obesity indicators in females was less than 0.6. Conclusions Body fat rate, waist circumference, waist-to-height ratio, and VFI are correlated with hypertension. Waist-to-height ratio is the best predictor of a single obesity index, while body mass index and waist-to-height ratio are the best predictors of a combined obesity index. Compared with the single obesity index, the combination of the general obesity index and central obesity index had no higher efficacy in predicting hypertension.