Association of Selenoenzyme Activity or Concentration and Oxidative Stress with the Risk of Neoplastic Progression to Esophageal Adenocarcinoma.

*HRs were adjusted for age at time of blood draw (5 categories), waist: hip ratio (quartiles), sex, smoking status, NSAID use (both for never, former or current) and serum selenium concentrations (continuous).**P for trend was obtained by assigning median values of each tertile.