title: Platelet volume is associated with the Framingham risk score for cardiovascular disease in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil).
abstract: BACKGROUND
  Platelet volume indices (PVI), an easy and inexpensive surrogate measure of platelet function, have been associated with cardiovascular diseases (CVD) and their risk factors. However, results are conflicting because of the lack of standardized procedures. The purpose of this study is to investigate the relationship of PVI with the Framingham risk score (FRS).
  
  
  METHODS
  Baseline data (2008-2010) of 3115 participants enrolled in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) were used. PVI measurements were strictly controlled. The cohort was distributed according to risk factors and the general FRS was estimated. Multiple linear regression analysis was used to estimate the association between PVI and FRS.
  
  
  RESULTS
  Mean platelet volume (MPV), platelet distribution width (PDW) and platelet large cell ratio (P-LCR) independently correlated (p≤0.01) with FRS after adjustment for confounding variables. One unit increase in MPV, PDW, or P-LCR increased the FRS by 0.59%, 0.40%, and 0.08%, respectively. Diabetics had higher (p≤0.004) MPV, PDW, and P-LCR, and hypertensive individuals had higher (p≤0.045) PDW and P-LCR.
  
  
  CONCLUSIONS
  Increased PVI was independently correlated with higher CVD risk based on the FRS, diabetes, and systolic hypertension. Prospective follow up of this cohort is warranted to confirm that PVI is associated with the development of CVD.
authors.forename: Chams B
authors.initials: CB
authors.lastname: Maluf
authors.forename: Sandhi M
authors.initials: SM
authors.lastname: Barreto
authors.forename: Rodrigo C P
authors.initials: RC
authors.lastname: dos Reis
authors.forename: Pedro G
authors.initials: PG
authors.lastname: Vidigal
mesh_terms: D000328:Adult; D000368:Aged; D001938:Brazil; D002318:Cardiovascular Diseases / Q000097:blood / Q000453:epidemiology*; D005260:Female; D006306:Health Surveys; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D063847:Mean Platelet Volume; D008875:Middle Aged; D015999:Multivariate Analysis; D012307:Risk Factors