Sung-Hyun Cho, PhD, MPH, RN, is Chief Researcher, Korea Institute for Health and Social Affairs, Seoul.
Shaké Ketefian, EdD, RN, FAAN, is Professor, University of Michigan School of Nursing, Ann Arbor.
Violet H. Barkauskas, PhD, RN, FAAN, is Associate Professor, University of Michigan School of Nursing, Ann Arbor.
Dean G. Smith, PhD, is Professor, University of Michigan School of Public Health, Ann Arbor.
Accepted for publication September 16, 2002.
This project was supported by grant number R03 HS11397 from the Agency for Healthcare Research and Quality.
The authors thank Dr. Edward Rothman, Professor of Statistics and Director, and Ms. Kathy Welch, Statistical Consultant, at the Center for Statistical Consultation and Research, University of Michigan, for their assistance in the statistical analysis.
Corresponding author: Sung-Hyun Cho, Korea Institute for Health and Social Affairs, Department of Health Policy, San 42-14 Bulgwang-dong Eunpyeong-gu Seoul, Korea 122-705 (e-mail: [email protected]).