I have a diverse background in both methodological and applied research across various fields and topics. My key interests include aging, adolescence, mental health, and issues related to substance use. I am particularly focused on methodologies that address challenges like sparse data, smartphone data collection, clustering techniques, and dynamic systems modeling. My work is motivated by a strong commitment to addressing public health issues and making a meaningful impact.
Dynamical systems modeling & Physical Resilience: I work primarily with Dr. Karen Bandeen Roche on developing methodology for dynamical systems modeling in the sparse-data context. We are motivated by the concept of physical resilience in older adults. Our ultimate goal is to test hypotheses underlying physical resilience-- we aim to characterize its pathways and presence in older adults.
Pre-frailty: frailty-related research: more to come
more to come
More to come
Charlotte Clapham, Karen Bandeen-Roche, PhD (2024+). New Perspectives on Prefrailty. In Preparation.
Charlotte Clapham, Ravi Varadhan, PhD, Karen Bandeen-Roche, PhD (2024+). Modeling and Design for Physiologic Systems Data. In Preparation.
Charlotte Clapham, Joe Kossowsky, PhD, Danielle A Wallace, PhD, Amélie V Martin, PhD, Brion Maher, PhD, Jill A. Rabinowitz, PhD, Vadim Zipunnikov, PhD (2024+).Associations of Objectively-Measured Sleep Metrics with ADHD and Externalizing Symptoms in the Adolescent Brain Cognitive Development Study. In Preparation.
Greer McKendrick, Ph.D., Charlotte Clapham, Vadim Zipunnikov Ph.D., Jennifer D. Ellis, Ph.D., Patrick Finan, Ph.D. Kelly E. Dunn, Ph.D., MBA, Eric Strain, M.D. Andrew S. Huhn, Ph.D., MBA (2024+). Effects of Suvorexant on Diurnal Cortisol and Patient-reported Stress during Opioid Withdrawal. In Preparation.
Bryant M. Stone, Ph.D., Charlotte Clapham, Janardan Devkota, M.S., Kelly Dunn, Ph.D., Vadim Zipunnikov, Ph.D., Ryan G. Vandrey, Ph.D., Patrick Finan, Ph.D., Johannes Thrul, Ph.D. (2024+).The Hidden Consequences of Disengaged Respondents in Ecological Momentary Assessment Studies: Identification, Characterization, & Implications. In Preparation.
Charlotte Clapham, Ravi Varadhan, PhD, Karen Bandeen-Roche, PhD (2024+). Modeling and Design for Physiologic Systems Data. Joint Statistical Meetings (JSM). Portland, OR. August 6, 2024.
Charlotte Clapham, Ravi Varadhan, PhD, Karen Bandeen-Roche, PhD (2024+). Johns Hopkins Biostatistics Department Seminar. Baltimore, MD. September 6, 2024.
Charlotte Clapham, Karen Bandeen-Roche, PhD (2025). Design and Analysis Implications for Local Linear Approximation of Dynamical Physiological Systems Data. Eastern North American Region (ENAR). New Orleans, LA. March 24, 2025
Charlotte Clapham, Ravi Varadhan, PhD, Karen Bandeen-Roche, PhD (2024). Design and Modeling for Sparsely Sampled Physiologic Systems Data. Gerontological Society of America (GSA). Seattle, WA. November 16, 2024.
Charlotte Clapham, Ravi Varadhan, PhD, Karen Bandeen-Roche, PhD (2024). Modeling and Design for Physiologic Systems Data. Research on Aging Showcase. Johns Hopkins University, Baltimore, MD. April 5, 2024
Charlotte Clapham, Joe Kossowsky, PhD, Danielle A Wallace, PhD, Amélie V Martin, PhD, Brion Maher, PhD, Jill A. Rabinowitz, PhD, Vadim Zipunnikov, PhD (2024). Associations of Objectively-Measured Sleep Metrics with ADHD and Externalizing Symptoms in the Adolescent Brain Cognitive Development Study. The Johns Hopkins Sleep & Circadian Research Day. Johns Hopkins University, Baltimore, MD. May 20, 2024
Coordinate and lead department and student events, while managing multiple committees. With an annual budget of $3,000, we support students' professional and personal growth as they engage with the department.
Representative of the Mental Health Graduate Network [August 2023- present]
Partnership with the Baltimore ToolBank [September- December 2023]