The Women's Health Initiative Observational Study: baseline characteristics of participants and reliability of baseline measures.
Langer
Robert D
RD
Department of Family and Preventive Medicine, University of California, San Diego, La Jolla, CA 92037, USA. rlanger@ucsd.edu
White
Emily
E
Lewis
Cora E
CE
Kotchen
Jane M
JM
Hendrix
Susan L
SL
Trevisan
Maurizio
M
D017677:Age Distribution; D000368:Aged; D003625:Data Collection / Q000379:methods / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008875:Middle Aged; D018579:Patient Selection; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D016387:Women's Health / Q000208:ethnology