• L F Wang, A R Tait, and L S Polley.
• Department of Anesthesiology, Women's Hospital, University of Michigan Health System, Ann Arbor, MI, USA. linfanw@umich.edu
• Int J Obstet Anesth. 2004 Jul 1; 13 (3): 159163159-63.

AbstractWillingness to participate in obstetric anesthesiology clinical studies may be influenced by age, parity or ethnicity. This study was designed to determine whether there were demographic differences between consenters and non-consenters in a minimum local analgesic concentration clinical study. Four hundred and fifty-two women were approached for the study and the age, ethnicity and parity of patients who consented or declined to participate were collected. Ethnicity was categorized as Asian or Pacific Islander, black, Hispanic, white, or other. Parametric data were analyzed using t-tests and non-parametric data using chi(2) tests. There were no significant differences in the consent rate based on age or parity. Black Americans were more likely to consent than Asian Americans (P<0.001) and as likely to consent as white Americans. There were no statistically significant differences in the consent rate between Caucasian and Asian Americans. More studies are needed to determine the socioeconomic and demographic factors that affect consent rates of labor patients.

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