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1. Disparities in expected driving time to opioid treatment and treatment completion: findings from an exploratory study

Author

Abdullah Alibrahim, Jeanne C. Marsh, Hortensia Amaro, Yinfei Kong, Tenie Khachikian, and Erick Guerrero

Subjects
Opioid use disorder, Medication-assisted treatment, Drive time, Geographic information system, Healthcare outcomes, Disparities, Public aspects of medicine, RA1-1270
Abstract

Abstract Background Commuting time to treatment has been shown to affect healthcare outcomes such as engagement and initiation. The purpose of this study is to extend this line of research to investigate the effects of driving time to opioid programs on treatment outcomes. Methods We analyzed discharge survey data from 22,587 outpatient opioid use disorder treatment episodes (mainly methadone) in Los Angeles County and estimated the associated driving time to each episode using Google Maps. We used multivariable logistic regressions to examine the association between estimated driving time and odds of treatment completion after adjusting for possible confounders. Results Findings show an average driving time of 11.32 min and an average distance of 11.18 km. We observed differences in estimated driving time across age, gender, and socioeconomic status. Young, male, less formally educated, and Medi-Cal-ineligible clients drove longer to treatment. A 10-min drive was associated with a 33% reduction in the completion of methadone treatment plans (p more...

Published
2022
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2. Gender disparities in opioid treatment progress in methadone versus counseling

Author

Erick Guerrero, Hortensia Amaro, Yinfei Kong, Tenie Khachikian, and Jeanne C. Marsh

Subjects
Gender disparities, Treatment progress, Opioid use, MOUD, Counseling, Methadone, Public aspects of medicine, RA1-1270, Social pathology. Social and public welfare. Criminology, HV1-9960
Abstract

Abstract Background In the United States, the high dropout rate (75%) in opioid use disorder (OUD) treatment among women and racial/ethnic minorities calls for understanding factors that contribute to making progress in treatment. Whereas counseling and medication for OUD (MOUD, e.g. methadone, buprenorphine, naltrexone) is considered the gold standard of care in substance use disorder (SUD) treatment, many individuals with OUD receive either counseling or methadone-only services. This study evaluates gender disparities in treatment plan progress in methadone- compared to counseling-based programs in one of the largest SUD treatment systems in the United States. Methods Multi-year and multi-level (treatment program and client-level) data were analyzed using the Integrated Substance Abuse Treatment to Eliminate Disparities (iSATed) dataset collected in Los Angeles County, California. The sample consisted of 4 waves: 2011 (66 SUD programs, 1035 clients), 2013 (77 SUD programs, 3686 clients), 2015 (75 SUD programs, 4626 clients), and 2017 (69 SUD programs, 4106 clients). We conducted two multi-level negative binomial regressions, one per each outcome (1) making progress towards completing treatment plan, and (2) completing treatment plan. We included outpatient clients discharged on each of the years of the study (over 95% of all clients) and accounted for demographics, wave, homelessness and prior treatment episodes, as well as clients clustered within programs. Results We detected gender differences in two treatment outcomes (progress and completion) considering two outpatient program service types (MOUD-methadone vs. counseling). Clients who received methadone vs. counseling had lower odds of completing their treatment plan (OR = 0.366; 95% CI = 0.163, 0.821). Female clients receiving methadone had lower odds of both making progress (OR = 0.668; 95% CI = 0.481, 0.929) and completing their treatment plan (OR = 0.666; 95% CI = 0.485, 0.916) compared to male clients and receiving counseling. Latina clients had lower odds of completing their treatment plan (OR = 0.617; 95% CI = 0.408, 0.934) compared with non-Latina clients. Conclusions Clients receiving methadone, the most common and highly effective MOUD in reducing opioid use, were less likely to make progress towards or complete their treatment plan than those receiving counseling. Women, and in particular those identified as Latinas, were least likely to benefit from methadone-based programs. These findings have implications for health policy and program design that consider the need for comprehensive and culturally responsive services in methadone-based programs to improve outpatient treatment outcomes among women. more...

Published
2021
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4. Disparities in opioid treatment access and retention among women based on pregnancy status from 2006 to 2017

Author

Tenie Khachikian, Hortensia Amaro, Erick Guerrero, Yinfei Kong, and Jeanne C. Marsh

Subjects
Pregnancy, Access, Retention, Treatment, Opioid use, Medicine
Abstract

Background: The purpose of this study is to assess differences in wait time and retention in opioid use disorder (OUD) treatment among a sample of pregnant and non-pregnant women from low-income urban communities in Los Angeles, California. Methods: Data were collected in 9 waves consisting of consecutive years from 2006 to 2011, and then including 2013, 2015, and 2017. The sample consisted of 12,558 women, with 285 being pregnant and 12,273 being non-pregnant. We compared pregnant women with non-pregnant women at admission on key characteristics and relied on two multilevel negative binomial regressions analyses to examine factors related to access (days on the waiting list) and retention (days in treatment). Results: We detected disparities existed in access and retention. Pregnant women spent less time waiting to initate treatment than non-pregnant women and, once in treatment, had longer treatment episodes. Among pregnant women, clients identifying as Latina or Other waited longer to enter treatment compared to clients identifying as non-Latina White or Black. Women entering residential waited longer than those entering methadone or counseling services. Pregnant women were more likely to be in treatment longer if they had mental health issues, greater parenting responsibilities (number of children less than 18), and greater SUD severity (number of prior treatment episodes). Conclusions: Findings suggest pregnant women's access and retention can be improved through Medicaid coverage and through the implementation of a standard of care that includes MOUD (methadone) along with ancillary health and social services. more...

Published
2022
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6. Proceedings from the 9th annual conference on the science of dissemination and implementation

Author

David Chambers, Lisa Simpson, Gila Neta, Ulrica von Thiele Schwarz, Antoinette Percy-Laurry, Gregory A. Aarons, Ross Brownson, Amanda Vogel, Shannon Wiltsey Stirman, Kenneth Sherr, Rachel Sturke, Wynne E. Norton, Allyson Varley, Cynthia Vinson, Lisa Klesges, Suzanne Heurtin-Roberts, M. Rashad Massoud, Leighann Kimble, Arne Beck, Claire Neely, Jennifer Boggs, Carmel Nichols, Wen Wan, Erin Staab, Neda Laiteerapong, Nathalie Moise, Ravi Shah, Susan Essock, Margaret Handley, Amy Jones, Jay Carruthers, Karina Davidson, Lauren Peccoralo, Lloyd Sederer, Todd Molfenter, Ashley Scudder, Sarah Taber-Thomas, Kristen Schaffner, Amy Herschell, Eva Woodward, Jeffery Pitcock, Mona Ritchie, JoAnn Kirchner, Julia E. Moore, Sobia Khan, Shusmita Rashid, Jamie Park, Melissa Courvoisier, Sharon Straus, Daniel Blonigen, Allison Rodriguez, Luisa Manfredi, Andrea Nevedal, Joel Rosenthal, David Smelson, Christine Timko, Nicole Stadnick, Jennifer Regan, Miya Barnett, Anna Lau, Lauren Brookman-Frazee, Erick Guerrero, Karissa Fenwick, Yinfei Kong, Gregory Aarons, Rebecca Lengnick-Hall, Benjamin Henwood, Nina Sayer, Craig Rosen, Robert Orazem, Brandy Smith, Lindsey Zimmerman, David Lounsbury, Rachel Kimerling, Jodie A. Trafton, Steven Lindley, Rahul Bhargava, Hal Roberts, Laura Gibson, Gabriel J. Escobar, Vincent Liu, Benjamin Turk, Arona Ragins, Patricia Kipnis, Ashley Ketterer Gruszkowski, Michael W. Kennedy, Emily Rentschler Drobek, Lior Turgeman, Aleksandra Sasha Milicevic, Terrence L. Hubert, Larissa Myaskovsky, Youxu C. Tjader, Robert J. Monte, Kathryn G. Sapnas, Edmond Ramly, Diane R Lauver, Christie M Bartels, Shereef Elnahal, Andrea Ippolito, Hillary Peabody, Carolyn Clancy, Randall Cebul, Thomas Love, Douglas Einstadter, Shari Bolen, Brook Watts, Vera Yakovchenko, Angela Park, William Lukesh, Donald R. Miller, David Thornton, Mari-Lynn Drainoni, Allen L. Gifford, Shawna Smith, Julia Kyle, Mark S Bauer, Daniel Eisenberg, Celeste Liebrecht, Michelle Barbaresso, Amy Kilbourne, Elyse Park, Giselle Perez, Jamie Ostroff, Sarah Greene, Michael Parchman, Brian Austin, Eric Larson, Stefanie Ferreri, Chris Shea, Megan Smith, Kea Turner, Jennifer Bacci, Kyle Bigham, Geoffrey Curran, Caity Frail, Cory Hamata, Terry Jankowski, Wendy Lantaff, Melissa Somma McGivney, Margie Snyder, Megan McCullough, Chris Gillespie, Beth Ann Petrakis, Ellen Jones, Carol VanDeusen Lukas, Adam Rose, Sarah J. Shoemaker, Jeremy Thomas, Benjamin Teeter, Holly Swan, Appathurai Balamurugan, Meghan Lane-Fall, Rinad Beidas, Laura Di Taranti, Sruthi Buddai, Enrique Torres Hernandez, Jerome Watts, Lee Fleisher, Frances Barg, Isomi Miake-Lye, Tanya Olmos, Emmeline Chuang, Hector Rodriguez, Gerald Kominski, Becky Yano, Stephen Shortell, Mary Hook, Linda Fleisher, Alexander Fiks, Katie Halkyard, Rachel Gruver, Emily Sykes, Kimberly Vesco, Kate Beadle, Joanna Bulkley, Ashley Stoneburner, Michael Leo, Amanda Clark, Joan Smith, Christopher Smyser, Maggie Wolf, Shamik Trivedi, Brian Hackett, Rakesh Rao, F. Sessions Cole, Rose McGonigle, Ann Donze, Enola Proctor, Amit Mathur, Emmanuela Gakidou, Stephen Gloyd, Carolyn Audet, Jose Salato, Sten Vermund, Rivet Amico, Stephanie Smith, Beatha Nyirandagijimana, Hildegarde Mukasakindi, Christian Rusangwa, Molly Franke, Giuseppe Raviola, Matthew Cummings, Elijah Goldberg, Savio Mwaka, Olive Kabajaasi, Adithya Cattamanchi, Achilles Katamba, Shevin Jacob, Nathan Kenya-Mugisha, J. Lucian Davis, Julie Reed, Rohit Ramaswamy, Gareth Parry, Sylvia Sax, Heather Kaplan, Keng-yen Huang, Sabrina Cheng, Susan Yee, Kimberly Hoagwood, Mary McKay, Donna Shelley, Gbenga Ogedegbe, Laurie Miller Brotman, Roman Kislov, John Humphreys, Gill Harvey, Paul Wilson, Robert Lieberthal, Colleen Payton, Mona Sarfaty, George Valko, Rendelle Bolton, Christine Hartmann, Nora Mueller, Sally K. Holmes, Barbara Bokhour, Sarah Ono, Benjamin Crabtree, Leah Gordon, William Miller, Bijal Balasubramanian, Leif Solberg, Deborah Cohen, Kate McGraw, Andrew Blatt, Demietrice Pittman, Helen Kales, Dan Berlowitz, Teresa Hudson, Christian Helfrich, Erin Finley, Ashley Garcia, Kristen Rosen, Claudina Tami, Don McGeary, Mary Jo Pugh, Jennifer Sharpe Potter, Krysttel Stryczek, David Au, Steven Zeliadt, George Sayre, Jennifer Leeman, Allison Myers, Jennifer Grant, Mary Wangen, Tara Queen, Alexandra Morshed, Elizabeth Dodson, Rachel Tabak, Ross C. Brownson, R. Chris Sheldrick, Thomas Mackie, Justeen Hyde, Laurel Leslie, Itzhak Yanovitzky, Matthew Weber, Nicole Gesualdo, Teis Kristensen, Cameo Stanick, Heather Halko, Caitlin Dorsey, Byron Powell, Bryan Weiner, Cara Lewis, Patricia Carreno, Kera Mallard, Tasoula Masina, Candice Monson, Taren Swindle, Zachary Patterson, Leanne Whiteside-Mansell, Rochelle Hanson, Benjamin Saunders, Sonja Schoenwald, Angela Moreland, Sarah Birken, Justin Presseau, David Ganz, Brian Mittman, Deborah Delevan, Jennifer N. Hill, Sara Locatelli, Gemmae Fix, Jeffrey Solomon, Sherri L. Lavela, Victoria Scott, Jonathan Scaccia, Kassy Alia, Brittany Skiles, Abraham Wandersman, Anne Sales, Megan Roberts, Amy Kennedy, Muin J. Khoury, Nina Sperber, Lori Orlando, Janet Carpenter, Larisa Cavallari, Joshua Denny, Amanda Elsey, Fern Fitzhenry, Yue Guan, Carol Horowitz, Julie Johnson, Ebony Madden, Toni Pollin, Victoria Pratt, Tejinder Rakhra-Burris, Marc Rosenman, Corrine Voils, Kristin Weitzel, Ryanne Wu, Laura Damschroder, Christine Lu, Rachel Ceccarelli, Kathleen M. Mazor, Ann Wu, Alanna Kulchak Rahm, Adam H. Buchanan, Marci Schwartz, Cara McCormick, Kandamurugu Manickam, Marc S. Williams, Michael F. Murray, Ngoc-Cam Escoffery, Erin Lebow-Skelley, Hallie Udelson, Elaine Böing, Maria E. Fernandez, Richard J. Wood, Patricia Dolan Mullen, Jenita Parekh, Valerie Caldas, Elizabeth A. Stuart, Shalynn Howard, Gilo Thomas, Jacky M. Jennings, Jennifer Torres, Christine Markham, Ross Shegog, Melissa Peskin, Stephanie Craig Rushing, Amanda Gaston, Gwenda Gorman, Cornelia Jessen, Jennifer Williamson, Dianne Ward, Amber Vaughn, Ellie Morris, Stephanie Mazzucca, Regan Burney, Shoba Ramanadhan, Sara Minsky, Vilma Martinez-Dominguez, Kasisomayajula Viswanath, Megan Barker, Myra Fahim, Arezoo Ebnahmady, Rosa Dragonetti, Peter Selby, Margaret Farrell, Jordan Tompkins, Wynne Norton, Kaelin Rapport, Margaret Hargreaves, Rebekka Lee, Gina Kruse, Charles Deutsch, Emily Lanier, Ashley Gray, Aaron Leppin, Lori Christiansen, Karen Schaepe, Jason Egginton, Megan Branda, Charlene Gaw, Sara Dick, Victor Montori, Nilay Shah, Ariella Korn, Peter Hovmand, Karen Fullerton, Nancy Zoellner, Erin Hennessy, Alison Tovar, Ross Hammond, Christina Economos, Christi Kay, Julie Gazmararian, Emily Vall, Patricia Cheung, Padra Franks, Shannon Barrett-Williams, Paul Weiss, Erica Hamilton, Luana Marques, Louise Dixon, Emily Ahles, Sarah Valentine, Derri Shtasel, Ruben Parra-Cardona, Mary Northridge, Rucha Kavathe, Jennifer Zanowiak, Laura Wyatt, Hardayal Singh, Nadia Islam, Madalena Monteban, Darcy Freedman, Kimberly Bess, Colleen Walsh, Kristen Matlack, Susan Flocke, Heather Baily, Samantha Harden, NithyaPriya Ramalingam, VCE Physical Activity Leadership Team, Rachel Gold, Erika Cottrell, Celine Hollombe, Katie Dambrun, Arwen Bunce, Mary Middendorf, Marla Dearing, Stuart Cowburn, Ned Mossman, Gerry Melgar, Suellen Hopfer, Michael Hecht, Anne Ray, Michelle Miller-Day, Rhonda BeLue, Greg Zimet, Eve-Lynn Nelson, Sandy Kuhlman, Gary Doolittle, Hope Krebill, Ashley Spaulding, Theodore Levin, Michael Sanchez, Molly Landau, Patricia Escobar, Nadia Minian, Aliya Noormohamed, Laurie Zawertailo, Dolly Baliunas, Norman Giesbrecht, Bernard Le Foll, Andriy Samokhvalov, Zachary Meisel, Daniel Polsky, Bruce Schackman, Julia Mitchell, Kaitlyn Sevarino, Sarah Gimbel, Moses Mwanza, Marie Paul Nisingizwe, Catherine Michel, Lisa Hirschhorn, Mahrukh Choudhary, Della Thonduparambil, Paul Meissner, Hilary Pinnock, Melanie Barwick, Christopher Carpenter, Sandra Eldridge, Gonzalo Grandes-Odriozola, Chris Griffiths, Jo Rycroft-Malone, Elizabeth Murray, Anita Patel, Aziz Sheikh, Stephanie J. C. Taylor, Martin Guilliford, Gemma Pearce, Diane Korngiebel, Kathleen West, Wylie Burke, Peggy Hannon, Jeffrey Harris, Kristen Hammerback, Marlana Kohn, Gary K. C. Chan, Riki Mafune, Amanda Parrish, Shirley Beresford, K. Joanne Pike, Rachel Shelton, Lina Jandorf, Deborah Erwin, Thana-Ashley Charles, Laura-Mae Baldwin, Brooke Ike, Jacqueline Fickel, Jason Lind, Diane Cowper, Marguerite Fleming, Amy Sadler, Melinda Dye, Judith Katzburg, Michael Ong, Sarah Tubbesing, Molly Simmons, Autumn Harnish, Sonya Gabrielian, Keith McInnes, Jeffrey Smith, John Ferrand, Elisa Torres, Amy Green, Angela R. Bradbury, Linda J. Patrick-Miller, Brian L. Egleston, Susan M. Domchek, Olufunmilayo I. Olopade, Michael J. Hall, Mary B. Daly, Generosa Grana, Pamela Ganschow, Dominique Fetzer, Amanda Brandt, Rachelle Chambers, Dana F. Clark, Andrea Forman, Rikki S. Gaber, Cassandra Gulden, Janice Horte, Jessica Long, Terra Lucas, Shreshtha Madaan, Kristin Mattie, Danielle McKenna, Susan Montgomery, Sarah Nielsen, Jacquelyn Powers, Kim Rainey, Christina Rybak, Christina Seelaus, Jessica Stoll, Jill Stopfer, Xinxin Shirley Yao, Michelle Savage, Edward Miech, Teresa Damush, Nicholas Rattray, Jennifer Myers, Barbara Homoya, Kate Winseck, Carrie Klabunde, Deb Langer, Avi Aggarwal, Elizabeth Neilson, Lara Gunderson, Marla Gardner, Liam O’Sulleabhain, and Candyce Kroenke more...

Subjects
Medicine (General), R5-920
Published
2017
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8. Cultural Competence as a Response to Structural Racism in Latino Substance Use and Access to Care in the United States

Author

Erick Guerrero, Tenie Khachikian, Richard C. Cervantes, Charles Kaplan, Rene D. Olate, and Jennifer B. Unger

Abstract

Disparities in substance use disorders (SUD) and access to treatment among individuals identified as Latino/Hispanic have become a significant public health issue in the United States. National efforts to identify, understand, and eliminate such disparities have highlighted the role of structural racism in Latino health. In this chapter, we offer a critical review of how Latino substance use and access to care may be impacted by discrimination, acculturation stress, and other mechanisms of structural racism. As structural racism is represented by policies, systems, structures, and norms that deny and/or minimize cultural strengths and disempower culturally diverse groups and their attempts to invest in their wellness, we highlight how cultural competence may reduce the risk of SUD and may enhance access to treatment among Latinos. We conclude by highlighting policies and responsive organizational practices that may improve Latino health. more...

Published
2022

9. Disparities in expected driving time to opioid treatment and treatment completion: findings from an exploratory study

Author

Abdullah Alibrahim, Jeanne C. Marsh, Hortensia Amaro, Yinfei Kong, Tenie Khachikian, and Erick Guerrero

Subjects
Analgesics, Opioid, Male, Automobile Driving, Health Policy, Opiate Substitution Treatment, Humans, Opioid-Related Disorders, Methadone
Abstract

Background Commuting time to treatment has been shown to affect healthcare outcomes such as engagement and initiation. The purpose of this study is to extend this line of research to investigate the effects of driving time to opioid programs on treatment outcomes. Methods We analyzed discharge survey data from 22,587 outpatient opioid use disorder treatment episodes (mainly methadone) in Los Angeles County and estimated the associated driving time to each episode using Google Maps. We used multivariable logistic regressions to examine the association between estimated driving time and odds of treatment completion after adjusting for possible confounders. Results Findings show an average driving time of 11.32 min and an average distance of 11.18 km. We observed differences in estimated driving time across age, gender, and socioeconomic status. Young, male, more formally educated, and Medi-Cal-ineligible clients drove longer to treatment. A 10-min drive was associated with a 33% reduction in the completion of methadone treatment plans (p Conclusion This systemwide analysis provides novel time estimates of driving-based experiences and a strong relationship with completion rates in methadone treatment. Specifically, the result showing reduced treatment completion rates for drive times longer than 10 min may inform policies regarding the ideal geographic placement of methadone-based treatment programs and service expansion initiatives. more...

Published
2021

11. Integration of MOSFET/MIM Structures Using a CMOS-Based Technology for pH Detection Applications with High-Sensitivity

Author

Berni Perez, Patrice M. Parris, Jose Fernandez, M. T. Sanz, Alfonso Torres, Joel Molina, Guillermo Espinosa, Erick Guerrero, and Mazhar Ul Hoque

Subjects
Materials science, Chemistry(all), business.industry, CMOS processing, Transistor, Analytical chemistry, General Medicine, reference electrode, law.invention, MOSFET, Capacitor, CMOS, law, pH detection, Chemical Engineering(all), Optoelectronics, ISFET, Polarization (electrochemistry), business, Layer (electronics), chemical sensor, Polyimide, MIM capacitor
Abstract

In this work, we show that by using Metal-Insulator-Metal (MIM) structures integrated in series to the gate of submicron Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) devices, highly-sensitive and ultra-low power consumption pH sensors can be obtained. One MIM capacitor enables external polarization of the MOSFET device while a second MIM capacitor is connected to a sensing plate whose surface is whether a thick polyimide layer or the last metallization level. The electrochemical response of these surfaces to pH buffer solutions resembles that of Ion-Sensitive Field-Effect Transistor (ISFET) devices whose pH sensitivity is dependent on the type of surface material being exposed. more...

Published
2012
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