Investigators who conduct clinical pain research are required to obtain vol
untary informed consent from patients. However, little is known about what
information patients expect when they decide whether to enroll in such stud
ies. It is important that investigators understand these information needs
so they can effectively and clearly describe the research risks and potenti
al benefits that matter to potential subjects. By understanding these needs
for information, investigators may also be better able to anticipate patie
nts' concerns and to recruit subjects more efficiently. This study was desi
gned to define information needs that patients have when they decide whethe
r to participate in clinical pain research. This paper describes these info
rmation needs, and identifies clinical and demographic variables associated
with specific needs. (C) 2001 International Association for the Study of P
ain. Published by Elsevier Science B.V. All rights reserved.