title: [Analysis on influence factors of dietary supplement used in population aged above 45 years in Beijing].
abstract: OBJECTIVE
  To explore influence factors of dietary supplement used in population aged above 45 years in Beijing.
  
  
  METHODS
  Utilizing the data of the survey of dietary supplement (DS) used in Beijing in 2006 was to investigate the influence factors by using multi-factorial logistic regression analysis.
  
  
  RESULTS
  All 2487 samples were included in the analysis. Sex, age, average income of each month for each member of the family, experiences of deficiency of nutrition, attitude to nutrition knowledge, attitude to the need of DS and city-or-rural resident had shown effects on DS using. The percentage of using DS in female was higher than that in male being 19.3% and 11.8% respectively. The percentage grew up as the age became older. The same trend appeared as the economic-status going up, but not as education level change. Use of DS was greater in urban population (16.9%) than in rural population (14.6%). The percentage of using DS in people who had or just been diagnosed as malnutrition/deficiency disease or chronic disease, or those who thought themselves having got these diseases only by their own feeling were higher than those did not.
  
  
  CONCLUSIONS
  People the female, the elder, or those having higher income, having experiences of deficiency of nutrition, are more interested in nutrition knowledge, and more positive in need of DS and those living in rural should be the target population of nutrition education for DS use.
authors.affiliation: Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
authors.forename: Yu-na
authors.initials: YN
authors.lastname: He
authors.forename: Zhen
authors.initials: Z
authors.lastname: Yang
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
authors.forename: Yi-mei
authors.initials: YM
authors.lastname: Sha
authors.forename: Zhi-yong
authors.initials: ZY
authors.lastname: Ren
authors.forename: Xing-huo
authors.initials: XH
authors.lastname: Pang
authors.forename: Guo
authors.initials: G
authors.lastname: Zeng
authors.forename: Feng-ying
authors.initials: FY
authors.lastname: Zhai
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002681:China; D019587:Dietary Supplements / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D012737:Sex Factors