title: Self-rated chronic conditions and 2-week prevalence in adults in Zhongshan, China: an epidemiological survey.
abstract: OBJECTIVE
  To examine the association between behavioural factors and the risk of chronic conditions and 2-week prevalence.
  
  
  METHODS
  This was a cross-sectional survey.
  
  
  METHODS
  The study was conducted in Zhongshan, China.
  
  
  METHODS
  A multistage clustering sampling method was used to select a representative sample of residents from the household registration system between July and September 2011. The overall sample replacement rate was 9.4%, and the final sample included 43 028 individuals.
  
  
  METHODS
  Chronic conditions and 2-week prevalence.
  
  
  RESULTS
  4979 (11.6%) of the participants reported having at least one chronic condition, 1067 (2.5%) had two or more concurrent chronic conditions, and 6830 (15.9%) reported having at least one disease in a 2-week recall period. The most common chronic condition was primary hypertension, which was reported by 6.8% of participants. Logistic regression models demonstrated that the main factors for having a chronic condition and 2-week prevalence were older age (≥65 years of age; OR 44.91, 95% CI 33.05 to 61.03; and OR 12.71, 95% CI 10.44 to 15.46, respectively), obesity (OR 3.00, 95% CI 2.63 to 3.42; and OR 2.50, 95% CI 2.22 to 2.82, respectively) and being a former smoker (OR 3.02, 95% CI 2.54 to 3.58; and OR 3.24, 95% CI 2.74 to 3.82, respectively).
  
  
  CONCLUSIONS
  This study suggests that older age, obesity and unhealthy behaviours are high-risk factors for poorer health status among the residents of Zhongshan, China. The present findings highlight the importance of recognising and managing harmful behaviours in order to improve health.
authors.affiliation: Department of Prevention Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, China.
authors.forename: Chunyan
authors.initials: C
authors.lastname: Zhu
authors.affiliation: School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Sun
authors.affiliation: Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, China.
authors.forename: Qingshan
authors.initials: Q
authors.lastname: Geng
authors.affiliation: School of Public Health, Sun Yat-Sen University, Guangzhou, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Fu
authors.affiliation: Laboratory Department, Guangzhou Women and Children's Medical Centre, Guangzhou, China.
authors.forename: Hongling
authors.initials: H
authors.lastname: Yang
authors.affiliation: Department of Internal Medicine, Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina, USA.
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China / Q000453:epidemiology; D002908:Chronic Disease / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D000075222:Essential Hypertension; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000453:epidemiology*; D012307:Risk Factors; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: Chronic condition; EPIDEMIOLOGY; PUBLIC HEALTH