| 1. | Examining Longitudinal Stimulant Use and Treatment Attendance as Parallel Outcomes in Two Contingency Management Randomized Clinical Trials.  |
| | McPherson, Sterling ; Brooks, Olivia ; Barbosa-Leiker, Celestina ; Lederhos, Crystal ; Lamp, Amanda ; Murphy, Sean ; Layton, Matthew E. ; Roll, John M. |
| | Journal of Substance Abuse Treatment 2016;61:18-25. [doi: 10.1016/j.jsat.2015.08.008]. |
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| 2. | An Application of Analyzing the Trajectories of Two Disorders: A Parallel Piecewise Growth Model of Substance Use and Attention-Deficit/Hyperactivity Disorder. |
| | Mamey, Mary Rose ; Barbosa-Leiker, Celestina ; McPherson, Sterling ; Burns, G. Leonard ; Parks, Craig ; Roll, John M. |
| | Experimental and Clinical Psychology 2015;23(6):422-427. [doi: 10.1037/pha0000047]. |
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| 3. | Examining the Factor Structure of the Clinical Opiate Withdrawal Scale: A Secondary Data Analysis from the National Drug Abuse Treatment Clinical Trials Network (CTN) 0003. |
| | Barbosa-Leiker, Celestina ; McPherson, Sterling ; Mamey, Mary Rose ; Burns, G. Leonard ; Layton, Matthew E. ; Roll, John M. ; Ling, Walter |
| | Drug and Alcohol Dependence 2015;152:218-222. [doi: 10.1016/j.drugalcdep.2015.03.036]. |
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| 4. | A 'Missing Not at Random' (MNAR) and 'Missing at Random' (MAR) Growth Model Comparison with a Buprenorphine/Naloxone Clinical Trial. |
| | McPherson, Sterling ; Barbosa-Leiker, Celestina ; Mamey, Mary Rose ; McDonell, Michael ; Enders, Craig K. ; Roll, John M. |
| | Addiction 2015;110(1):51-58. [doi: 10.1111/add.12714]. |
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| 5. | Association Between Hepatitis C Virus and Opioid Use While in Buprenorphine Treatment: Preliminary Findings. |
| | Murphy, Sean M. ; Dweik, Dana ; McPherson, Sterling ; Roll, John M. |
| | American Journal of Drug and Alcohol Abuse 2014;41(1):88-92. [doi: 10.3109/00952990.2014.983274]. |
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| 6. | Osmotic-Release Methylphenidate Randomized Controlled Trial for Adolescents with Attention-Deficit/Hyperactivity Disorders and Substance Use Disorders: A Missing Data Sensitivity Analysis.  |
| | McPherson, Sterling ; Mamey, Mary Rose ; Barbosa-Leiker, Celestina ; Murphy, Sean ; Roll, John M. |
| | Presented at the College on Problems of Drug Dependence (CPDD) annual meeting, San Juan, Puerto Rico, June 14-19, 2014. |
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| 7. | Psychometric Properties of the Adjective Rating Scale for Withdrawal Across Treatment Groups, Gender, and Over Time. |
| | Barbosa-Leiker, Celestina ; McPherson, Sterling ; Marney, Mary Rose ; Burns, G. Leonard ; Roll, John M. |
| | Journal of Substance Abuse Treatment 2013;46(2):251-256. [doi: 10.1016/j.jsat.2013.08.020]. |
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| 8. | Longitudinal Missing Data Strategies for Substance Use Clinical Trials Using Generalized Estimating Equations: An Example with a Buprenorphine Trial. |
| | McPherson, Sterling ; Barbosa-Leiker, Celestina ; McDonell, Michael ; Howell, Donelle ; Roll, John M. |
| | Human Psychopharmacology: Clinical and Experimental 2013;28(5):506-515. [doi: 10.1002/hup.2339]. |
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| 9. | Growth Mixture Modeling of Stimulant Use Treatment Effects and Differential Trajectories: Evidence from Two Contingency Management Clinical Trials.  |
| | McPherson, Sterling ; Barbosa-Leiker, Celestina ; McDonell, Michael ; Roll, John M. |
| | Poster presented at the College on Problems of Drug Dependence (CPDD) annual meeting, San Diego, CA, June 15-20, 2013. |
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| 10. | Longitudinal Opioid Use in Patients Treatment with Buprenorphine: A "Missing Not At Random" (MNAR) and "Missing At Random" (MAR) Growth Model Comparison. |
| | McPherson, Sterling ; Barbosa-Leiker, Celestina ; McDonell, Michael ; Howell, Donelle ; Roll, John M. |
| | Poster presented at the College on Problems of Drug Dependence (CPDD) annual meeting, Palm Springs, CA, June 9-14, 2012. |
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| 11. | A Comparative Example of Missing Data Strategies in Substance Abuse Clinical Trials Using Generalized Estimating Equations (GEE). |
| | McPherson, Sterling ; Barbosa-Leiker, Celestina ; McDonell, Michael ; Howell, Donelle ; Roll, John M. |
| | Poster presented at the American Psychological Association (APA) annual convention, August 2-5, 2012. |
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| 12. | Missing Data in Substance Abuse Treatment Research: Current Methods and Modern Approaches. |
| | McPherson, Sterling ; Barbosa-Leiker, Celestina ; Burns, G. Leonard ; Howell, Donelle ; Roll, John M. |
| | Experimental and Clinical Psychopharmacology 2012;20(3):243-250. [doi: 10.1037/a0027146]. |
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