Abstract
Objective
To estimate the effect of change in weight and change in urinary incontinence (UI) frequency on changes in preference-based measures of health-related quality of life (HRQL) among overweight and obese women with UI participating in a weight loss trial.
Methods
We conducted a longitudinal cohort analysis of 338 overweight and obese women with UI enrolled in a randomized clinical trial comparing a behavioral weight loss intervention to an educational control condition. At baseline, 6, and 18 months, health utilities were estimated using the Health Utilities Index Mark 3 (HUI3), a transformation of the SF-36 to the preference-based SF-6D, and the estimated Quality of Well-Being (eQWB) score (a summary calculated from the SF-36 physical functioning, mental health, bodily pain, general health perceptions, and role limitations–physical subscale scores). Potential predictors of changes in these outcomes were examined using generalized estimating equations.
Results
In adjusted multivariable models, weight loss was associated with improvement in HUI3, SF-6D, and eQWB at 6 and 18 months (P < 0.05). Increases in physical activity also were independently associated with improvement in HUI3 (P = 0.01) and SF-6D (P = 0.006) scores at 18 months. In contrast, reduction in UI frequency did not predict improvements in HRQL at 6 or 18 months.
Conclusion
Weight loss and increased physical activity, but not reduction in UI frequency, were strongly associated with improvements in health utilities measured by the HUI3, SF-6D, and eQWB. These findings provide important information that can be used to inform cost–utility analyses of weight loss interventions.
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Acknowledgments
The authors wish to acknowledge the contribution made by PRIDE investigators, staff, consultants, sponsor and Data and Safety Monitoring Board.
Conflict of interest
Dr. West serves on the medical advisory board for Jenny Craig, Inc.
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Additional information
Clinical Trial Registration for “PRIDE” is NCT00091988 in www.clinicaltrials.gov.
The study is conducted for the Program to Reduce Incontinence by Diet and Exercise (PRIDE).
Please refer “Appendix” section for PRIDE investigators, staff, consultants, sponsor and Data and Safety Monitoring Board.
Appendix
Appendix
The University of Alabama, Birmingham—Frank Franklin, MD, PhD (Principal Investigator), Holly Richter, PhD, MD (Co-Investigator), Leslie Abdo, BSN, RN, CCRC, Charlotte Bragg, MS, RD, LD, Kathy Burgio, PhD (Investigator), Kathy Carter, RN, BSN, Juan Dunlap, Stacey Gilbert, MPH, Sara Hannum, Anne Hubbell, MS, RD, LD, Karen Marshall, Lisa Pair, CRNP, Penny Pierce, RN, BSN, Clara Smith, MS, RD, Sue Thompson, RN, Janet Turman, Audrey Wrenn, MAEd.
The Miriam Hospital—Rena Wing, PhD (Principal Investigator), Amy Gorin, PhD (Co-Investigator), Deborah Myers, MD (Co-Investigator), Tammy Monk, MS, Rheanna Ata, Megan Butryn, PhD, Pamela Coward, MEd, RD, Linda Gay, MS, RD, CDE, Jacki Hecht, MSN, RN, Anita Lepore-Ally, RN, Heather Niemeier, PhD, Yael Nillni, Angela Pinto, PhD, Deborah Ranslow-Robles, Phlebotomist/MedAsst, Natalie Robinson, MS, RD, Deborah Sepinwall, PhD, Margaret E. Hahn, MSN, RNP, Vivian W. Sung, MD, MPH, Victoria Winn, Nicole Zobel.
The University of Arkansas for Medical Sciences—Delia West, PhD (Investigator). The University of Pennsylvania—Gary Foster, PhD (Consultant).
The University of California, San Francisco (Coordinating Center)—Deborah Grady, MD, MPH (Principal Investigator), Leslee Subak, MD (Co-PI), Judith Macer, Ann Chang, Jennifer Creasman, MSPH, Judy Quan, PhD, Eric Vittinghoff, PhD, Jennifer Yang.
Supported by grants #U01 DK067860, U01 DK067861 and U01 DK067862 from The National Institute of Diabetes and Digestive and Kidney Diseases—John W. Kusek, PhD, Leroy M. Nyberg, MD, PhD (Project Officers). Preparation of this manuscript was supported by 5K23DK075645 from The National Institute of Diabetes and Digestive and Kidney Diseases.
Data and Safety Monitoring Board
The University of Utah Health Sciences Center—Ingrid Nygaard, MD (DSMB Chairperson)
The Children’s Hospital Boston—Leslie Kalish, ScD
The University of California, San Diego—Charles Nager, MD
The Medical University of South Carolina—Patrick M. O’Neil, PhD
The Johns Hopkins School of Medicine—Cynthia S. Rand, PhD
The University of Virginia Health Systems—William D. Steers, MD
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Pinto, A.M., Subak, L.L., Nakagawa, S. et al. The effect of weight loss on changes in health-related quality of life among overweight and obese women with urinary incontinence. Qual Life Res 21, 1685–1694 (2012). https://doi.org/10.1007/s11136-011-0086-2
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DOI: https://doi.org/10.1007/s11136-011-0086-2