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CHOPR Meet Our Research Fellows


Postdoctoral Fellows
Barnes_H_7_2014v2.jpgDr. Hilary Barnes (BA Skidmore College, 1997; BSN University of Pennsylvania, 2005; MSN Widener University, 2008; PhD Widener University, 2013) is a post-doctoral research fellow focusing on nurse practitioner role transition. She is nationally certified as a Family Nurse Practitioner, and her clinical background includes emergency nursing, surgery/surgical oncology, and addiction/behavioral health. Her dissertation is titled "A Study of Nurse Practitioner Role Transition Through Examination of the Specific Relationships of Desire for Feedback, Desire for Control, and the Number of Years of Prior Registered Nurse Experience."
Recent Publication:
  • Barnes, H. (2014). Nurse practitioner role transition: A concept analysis. Nursing Forum. doi:10.1111/nuf.12078
  • Barnes, H. (2015). Exploring the Factors That Influence Nurse Practitioner Role Transition. The Journal for Nurse Practitioners, 11, 178-183. doi:10.1016/j.nurpra.2014.11.004.
Hallowell_SG.jpgDr. Sunny G. Hallowell (BS University of Toronto, 1996; BSN University of Toronto, 2000; MSN University of Pennsylvania, 2005, PhD University of Pennsylvania, 2013) is a post-doctoral research fellow focused on the effect of nurse staffing and organizational climate in hospitals on neonatal and pediatric health outcomes.  Her research interests include the effect of innovative models of health care delivery, advance practice nurse scope of practice, continuity of patient care and the science of human milk.  Her dissertation is titled "The Associations Between the Nurse Work Environment, Breastfeeding Support and Human Milk Provision in the NICU”.  She was awarded the University of Pennsylvania School of Nursing 2012 Research Committee Pilot Award in order to conduct her research.   Dr. Hallowell is a Board Certified Pediatric Nurse Practitioner and Lactation Consultant and has taught thousands of parents and hundreds of nurses, nurse practitioners, and medical interns about the essentials of newborn care, importance of human milk and breastfeeding.
Recent Publications:
  • Hallowell, S.G. & Spatz, D. L. (2012).  The Relationship Between Brain Development and Breastfeeding in the Late Preterm Infant.  Journal of Pediatric Nursing.  27. 154-162.  doi:10.1016/j.pedn.2010.12.018.  Published online March 03, 2011.
  • Hallowell, S.G., Spatz, D.L., Hanlon, A.L., Rogowski, J.A., Lake, E.T. (2014).  Characteristics of the NICU Work Environment Associated with Breastfeeding Support.  Advances in Neonatal Care. 14(4): 290-300. doi:  10.1097/ANC.0000000000000102.  Published online July 31, 2014.
Dr. Olga JarrinDr. Olga Jarrín (BS, MS, PhD University of Connecticut, School of Nursing, 2002, 2007, 2010) is a post-doctoral fellow focusing on health disparities, community healthcare outcomes and the nursing workforce. Her background is in community and public health nursing research and she has worked as a visiting nurse/ case manager. Her Doctoral Dissertation is titled, "A Philosophical Inquiry of Nursing Meta-language".
Selected Publications:
  • Jarrín, O.F. (2006). Results from the Nurse Manifest 2003 Study: Nurses' Perspectives on Nursing. Advances in Nursing Science, 29(2), E74-E85.
  • Neafsey, P., Jarrín, O., Coffman, M. & Luciano, S. (2007). Self-Medication Behaviors of Spanish-Speaking Older Adults, Hispanic Health Care International, 5(4), 169-179.
  • Jarrín, O.F. (2007). An Integral Philosophy and Definition of Nursing. Journal of Integral Theory and Practice, 2(4), 79-101.
  • Jarrín, O.F. (2010). Core Elements of U.S. Nurse Practice Acts and Incorporation of Nursing Diagnosis Language. International Journal of Nursing Taxonomies and Classifications 21(4), 166-176.
  • Brooks Carthon JM, Kutney-Lee A, Jarrín O, Sloane DM, Aiken LH. (2012). Nurse Staffing and Post Surgical Mortality in Black Patients. Journal of the American Geriatrics Society.
  • Jarrín O.F. (2012). The Integrality of Situated Caring in Nursing and the Environment. Advances in Nursing Science 35(1), 14-24.  This is currently featured (free) on the ANS Journal website. LINK TO ARTICLE
Dr. Jessica Rearden (BSN Cedar Crest College, 2000; MS University of Pennsylvania, 2010; PhD University of Pennsylvania 2014) is a post-doctoral researcher focusing on the influence of nursing care on cancer patient outcomes, eliminating cancer health disparities and improving opportunities for cancer clinical trial enrollment among under-represented groups.  Dr. Rearden’s clinical background is in oncology nursing and she has worked in bone marrow transplant, as a clinical research nurse and a clinical research nursing supervisor. Her dissertation, titled “Examining Opportunity for Cancer Clinical Trial Participation Among Under-represented Groups” was supported by a National Institute of Nursing Individual NRSA F31 (1F31NR01407601A1) and the American Nurses Foundation/Council for the Advancement of Nursing Science.
Selected Publication:
  • Rearden J, Hanlon A, Ulrich C, Brooks-Carthon M, Sommers M. (in press). Examining Differences in Opportunity and Eligibility for Cancer Clinical Trial Participation Based on Socio-Demographic and Disease Characteristics. Oncology Nursing Forum.
rochman2012.jpgDr. Monica F. Rochman (Diploma Ravenswood Hospital, 1999; BSN University of Michigan, 2005; PhD University of Michigan, 2012) is a post-doctoral research fellow focused on the effect of nurse staffing on in-hospital cardiac arrest survival. Her dissertation is titled "The Impact of Nurse Staffing on in-Hospital Cardiac Arrest Patient Outcomes." Her clinical background is in emergency nursing.
Selected publications:
  • Rochman, M., Aebersold, M., Tschannen, D., and Camridge, B.(2012). Interprofessional simulation nurse interruptions. Journal of Nursing Care Quality 27(3): 277-281
  • Kalisch, B., Friese CR., Choi, SH., & Rochman, M. (2011). Hospital nurse staffing: choice of measures matters. Medical Care 49(8): 775-779.
  • Kalisch, B., Lee, H., & Rochman, M. (2010). Nursing Teamwork and Job Satisfaction. Journal of Nursing Management 18(8): 938-947.
Harkness Fellow
CMaieHeadshShot.jpgClaudia B. Maier (Harkness / B. Braun Fellow on Healthcare Policy and Practice 2014-15, MSc in Public Health, Dipl. Nursing) is a visiting researcher from Germany, with a strong interest in international health systems and health workforce.  Over the last nine years, Claudia worked in European and global health systems research and policy, including with the World Health Organization Regional Office for Europe, UNAIDS, the European Observatory on Health Systems and Policies, the European Commission, and at one of the state Institutes of Public Health in Germany. Claudia’s first degree in Nursing at University level was a new development in Germany at the time, and triggered her interest in health workforce and especially nursing workforce issues. As 2014-15 Harkness Fellow on Healthcare Policy and Practice, Claudia will spend one year at the University of Pennsylvania School of Nursing in the Center for Health Outcomes and Policy Research focusing on a research project on "Policies and organizational strategies enabling task-shifting and skill-mix from medical doctors to nurses in advanced roles: A cross-country comparative analysis."
Selected publications:
  • Maier CB, et al (2014). Monitoring health professional mobility in Europe. In: Wismar M, Glinos IA, Buchan J. Health professional mobility in a changing Europe: new dynamics, mobile individuals and policy responses. World Health Organization, on behalf of the European Observatory on Health Systems and Policies.
  • Aluttis A, Maier CB, et al (2014). Developing the public health workforce in Europe. In: Rechel B, McKee M. Facets of Public Health in Europe. World Health Organization, on behalf of the European Observatory on Health Systems and Policies.
  • Siapka M, Remme M, Obure CD, Maier CB, et al (2014). Is there scope for cost savings and efficiency gains in HIV services? A systematic review of the evidence in LMIC. Bulletin of the World Health Organization. ISSN 0042-9686 (In Press).
  • Sweeney S, Obure CD, Maier CB et al (2012). Costs and efficiency of integrating HIV/AIDS services with other health services: a systematic review of evidence and experience. Sex Transm Infect. 2012 Mar; 88(2):85-99.
  • Ognyanova D, Maier CB, et al (2012). Mobility of health professionals pre and post 2004 and 2007 EU enlargements: evidence from the EU project PROMeTHEUS. Health Policy. Dec;108(2-3):122-32.
  • Maier CB, Glinos IA, et al (2011): Cross-country analysis of health professional mobility in Europe: the results. In: Wismar M, Maier CB, et al (eds.) (2011): Health professional mobility and health systems. Evidence from 17 European countries[1]. World Health Organization 2011, on behalf of the European Observatory.
  • Wismar M, Maier CB, et al (eds.) (2011): Health professional mobility and health systems. Evidence from 17 European countries[2]. World Health Organization 2011, on behalf of the European Observatory.
  • Maier CB, Martin-Moreno JM (2011): Quo vadis Sanepid? A cross-country analysis of public health reforms in 10 post-Soviet States. Health Policy, Sep;102(1):18-25. Epub 2010 Sep 22.
Predoctoral Fellows
Danielle-1(1)-(2)aa.jpgDanielle Altares Sarik recently defended her dissertation and received her PhD degree on May 18, 2015. She holds a BA in Biology and Society from Cornell University, a BSN from the University of Pennsylvania, and an MSN in Pediatric Primary Care from the University of Pennsylvania. Prior to her doctoral studies Danielle worked as a Policy and Advocacy Associate at a global health organization where she helped to support organization-wide policy initiatives. She is also a board certified Pediatric Nurse Practitioner and has worked in pediatric outpatient care. Her research interests include international nursing and global health, nurse education and patient outcomes, as well as the role of advanced practice nurses in health care delivery.​ ​
blanchette2013.jpgKaren Lasater recently defended her dissertation and received her PhD degree on May 18, 2015. She plans to remain at CHOPR as a postdoctoral fellow. She completed her BSN at Quinnipiac University. Prior to entering the BSN/PhD program at the University of Pennsylvania, she practiced as a telemetry nurse. While practicing, she was involved in collecting data for a two-year multisite quasi-experimental research study aimed at improving heart failure outcomes for adult patients with heart failure. Karen maintained an active role as a member of the hospital’s Center for Nursing Research and Innovation, as well the finance committee for Connecticut Nurse’s Association. Her research interests include the nursing workforce, practice environment, and health outcomes. Photo

Aparna Kumar is a third year pre-doctoral student. She holds a BA in political science from the University of Illinois, a BSN from the University of Pennsylvania, and an MSN in Psychiatric and Mental Health from the University of Pennsylvania School of Nursing. Prior to her doctoral studies, she worked as a neuroscience nurse, conducted research in sub-Saharan Africa, and worked in social services for children and families.  She is a board certified Psychiatric and Mental Health Nurse Practitioner and works in an outpatient setting. She is the co-author of several scientific papers. Her research interests include improving inpatient care outcomes, reducing readmissions for psychiatric patients, and implementing effective strategies for achieving mental health parity.
shweta2012.jpgShweta Singh is a second year pre-doctoral fellow at CHOPR. She completed her BSN and MSN in the Adult and Gerontology NP program at the University of Pennsylvania. Prior to starting the doctoral program, she worked as an oncology-certified, Level II clinical nurse in medical oncology at the Hospital of the University of Pennsylvania (HUP). As an RN, she actively participated in the Magnet Shared Governance council and assisted in the implementation of the electronic medical record at HUP. In her time at Penn, she presented class analyses on reform to Governor Rendell’s Office of Health Care Reform, was on the founding editorial board of the Journal of Student Nursing Research, and was inducted into the honor society Sigma Theta Tau International. She maintains an interest in international health and participated in the Penn Guatemalan Health Initiative as well as Penn tsunami relief efforts in Sri Lanka. Her researchinterests include nurse education, staffing, burnout, and the interaction of workplace environment, nursing care and patient outcomes. Her Center advisors are Dr. Linda Aiken and Dr. Ann Kutney-Lee.
Recent publication:
Singh, S. (2012). Entry into practice: Is it relevant today? [Letter to the editor]. American Nurses Association Online Journal of Issues in Nursing.
Hillman Scholars​
Hayley-002.jpgHayley Germack is a BSN/PhD Hillman Scholar. She recently defended her dissertation and received her PhD degree on May 18, 2015. She plans to remain at CHOPR as a postdoctoral fellow. She has a BA in Medical Anthropology from the University of Pennsylvania’s College of Arts and Sciences. She will get her BSN in December 2012. Prior to starting the PhD she worked as a qualitative researcher for programs in Nicaragua, Guatemala, and the Philadelphia School District. Her research interests are health inequalities, cultural dimensions of nursing, mixed methods, and nurse staffing. Her center advisor is Dr. Linda Aiken. Her current work at the Center uses RN4Cast data to look at the relationship between percent of internationally recruited nurses at hospitals in the UK and its relationship with patient perceived outcomes. She is also working on a study using a videography intervention in documenting recovery of patients with Serious Mental Illness.
Linda Kang has a BSN with a minor in multicultural/global health care and a BA in Health and Societies with a concentration in Public Health from the University of Pennsylvania. Linda is a Hillman Scholar for Nursing Innovation in the first cohort of the BSN to PhD program. Her research interests are in international health care, inter-professional education and collaboration, nurse work environment and health policy. This past summer Linda traveled home to China to conduct qualitative research on the field exploring managers', nurses' and patients' attitudes towards community health centers.