Prevalence and influencing factors of overweight and obesity of adult residents in Xuzhou City of Jiangsu Province, 2013

Objective To understand the prevalence and influencing factors of overweight and obesity in adult residents in Xuzhou City of Jiangsu Province, so as to provide scientific basis for health policies and intervention strategies. Methods A total of 39 445 participants were recruited by multi-stage random cluster sampling method, and health data were obtained through questionnaires and physical examinations. Results The prevalence of overweight and obesity was 34.60% and 9.40%, respectively; and the standardized prevalence was 32.97% and 8.67%. The prevalence of overweight or obesity in males was 36.73% and 8.62%, in females 32.61% and 10.13%. The prevalence of overweight or obesity was increased with age, although the prevalence of overweight was decreased after 55 years of age (18-:16.31%; 25-:27.38%; 35-:37.28%; 45-:41.55%; 55-:40.71%; 65-:37.64%; 75-:32.08%) and the prevalence of obesity was decreased after 75 years of age (18-:2.49%; 25-:6.41%; 35-:9.64%; 45-:11.24%; 55-:12.07%; 65-:12.45%; 75-:8.88%). There were significant difference of the prevalence of overweight/obesity by educational level (χ2=178.41, P<0.01; χ2=243.59, P<0.01), profession (χ2=191.28, P<0.01; χ2=120.38, P<0.01) and marital status (χ2=431.67, P<0.01; χ2=118.43, P<0.01). In Logistic regression, female, vegetable over-intake every day and current cigarette smoking were protective factors of overweight/obesity, while middle and old-age, alcohol drinking and big appetite were risk factors of overweight/obesity. Conclusions A higher morbidity rate of overweight/obesity was found in Xuzhou City, and comprehensive interventions should be taken for high risk populations. Key words: Adult; Overweight; Obesity; Factor analysis, statistical