title: [Multivariate response model with multilevel and its application in the influencing factors of blood pressure].
abstract: OBJECTIVE
  To explore the application of multivariate response model with multilevel in the influencing factors of blood pressure.
  
  
  METHODS
  Two response model with three-level was fitted under MLwin 2.02 software.
  
  
  RESULTS
  The correlation coefficient between systolic blood pressure (SBP) and diastolic blood pressure (DBP) was 0.949 at region level, and 0.701 at individual level. SBP and DBP level increased with age, while the regression coefficient of age on SBP was significantly higher than on DBP, beta was 0.720 (SBP) and 0.118 (DBP) individually (chi2 = 4284.56, P < 0.001). The DBP and SBP level of male were higher than that of female, while the regression coefficient of gender on DBP was significantly higher than on SBP, beta was 2.208 (SBP) and 3.113 (DBP) individually (chi2 = 31.35, P < 0.001).
  
  
  CONCLUSIONS
  Multivariate response model with multilevel can be used to analyze the hierarchy structure data, and it is also a good tool to analyze the influencing factors of blood pressure.
authors.affiliation: Department of Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
authors.forename: Yongli
authors.initials: Y
authors.lastname: Yang
authors.forename: Pengyu
authors.initials: P
authors.lastname: Fu
authors.forename: Jing
authors.initials: J
authors.lastname: Xie
authors.forename: Weidong
authors.initials: W
authors.lastname: Zhang
authors.forename: Meixi
authors.initials: M
authors.lastname: Zhang
authors.forename: Chongjian
authors.initials: C
authors.lastname: Wang
authors.forename: Zhiguang
authors.initials: Z
authors.lastname: Ping
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Hu
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001794:Blood Pressure / Q000502:physiology*; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D055361:Multilevel Analysis; D015999:Multivariate Analysis