1. Predictors of Participant Retention in Infertility Treatment Trials
- Author
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Hongying Kuang, Susan Jin, Tracey Thomas, Lawrence Engmann, Karl R. Hansen, Christos Coutifaris, Peter Casson, Gregory Christman, Ruben Alvero, Nanette Santoro, Esther Eisenberg, Michael P. Diamond, Richard S. Legro, Heping Zhang, C. Bartlebaugh, W. Dodson, S. Estes, C. Gnatuk, R. Ladda, J. Ober, C. Easton, A. Hernandez, M. Leija, D. Pierce, R. Bryzski, A. Awonuga, L. Cedo, A. Cline, K. Collins, S.A. Krawetz, E. Puscheck, M. Singh, M. Yoscovits, K. Barnhart, K. Lecks, L. Martino, R. Marunich, P. Snyder, W.D. Schlaff, A. Comfort, M. Crow, A. Hohmann, S. Mallette, M. Ringbloom, J. Tang, S. Mason, N. DiMaria, M. Rhea, K. Turner, D.J. Haisenleder, J.C. Trussell, D. DelBasso, Y. Li, R. Makuch, P. Patrizio, L. Sakai, L. Scahill, H. Taylor, T. Thomas, S. Tsang, M. Zhang, C. Lamar, L. DePaolo, D. Guzick, A. Herring, J. Bruce Redmond, M. Thomas, P. Turek, J. Wactawski-Wende, R. Rebar, P. Cato, V. Dukic, V. Lewis, P. Schlegel, and F. Witter
- Subjects
Infertility ,Adult ,Male ,medicine.medical_specialty ,Patient Dropouts ,Adolescent ,Article ,Young Adult ,Pregnancy ,Risk Factors ,Internal medicine ,medicine ,Odds Ratio ,Humans ,Unexplained infertility ,Randomized Controlled Trials as Topic ,Gynecology ,Academic Medical Centers ,Chi-Square Distribution ,business.industry ,Patient Selection ,Female infertility ,Obstetrics and Gynecology ,Odds ratio ,Fertility Agents, Female ,Retention rate ,medicine.disease ,Polycystic ovary ,Clinical trial ,Fertility ,Logistic Models ,Treatment Outcome ,Reproductive Medicine ,Multivariate Analysis ,Drug Therapy, Combination ,Female ,business ,Chi-squared distribution ,Infertility, Female ,Polycystic Ovary Syndrome - Abstract
Objective To identify variables associated with retention (or dropout) in infertility clinical trials. Retention of subjects in randomized controlled clinical trials (RCTs) has received considerable attention, but there have been few consistent findings. Design Secondary analysis of data from RCTs. Setting Academic medical centers. Patient(s) Women with polycystic ovary syndrome (PCOS) or couples with unexplained infertility, aged 18–40 years. Intervention(s) This study is not an intervention study, but the patients in the original RCTs were treated with any or combination of metformin, clomiphene citrate (CC), letrozole, and gonadotropins. Main Outcome Measure(s) Successful retention versus dropout during the RCTs. Result(s) Race, ethnicity, body mass index (BMI), insurance coverage, history of smoking, and history of alcohol use were significantly associated with retention whether they were considered in bivariate analyses or a multivariable logistic model. Specifically, white race, higher income, having graduate degrees, normal weight, better insurance coverage, nonsmokers, and those who reported current use of alcohol at the start of the trial, had higher retention rates. Conclusion(s) We identified several additive and persistent predictors of retention that can be used to guide the conduct of RCTs and improve the retention rate. Given the limitation of our association analysis, methodologically sound and theoretically grounded research are warranted so that high quality data can be collected to improve our understanding on the causes of dropout. Clinical Trial Registration Number NCT00068861 (PPCOS-I), NCT00719186 (PPCOS-II), and NCT01044862 (AMIGOS).
- Published
- 2015