Rebecca N. Arhin

Modelling Dynamic PSA Trajectories and Survival in Prostate Cancer Using Joint Longitudinal Survival Models

Francis Ayiah-Mensah, Senyefia Bosson-Amedenu, William Obeng-Denteh, Rebecca N. Arhin & Christiana N. M. Lokko · Journal of Cancer and Tumor International · 2026

Biologically and clinically, prostate cancer is significantly heterogeneous; still, much of the existing empirical research on prognosis proceeds within the two-stage paradigm, which conceptualises prostate-specific antigen (PSA) as a static baseline variable and neglects its dyn...

Open access Research Article 10.9734/jcti/2026/v16i1336

A Multilevel Beta Mixed-effects Analysis of the Non-linear Evolution of HIV Prevalence in Females Aged 15-24 Years

Francis Ayiah-Mensah, Emmanuel Harris, Michael Asare Bediako, Vivian Nimoh & Rebecca N. Arhin · International STD Research & Reviews · 2026

Background and Objectives: Despite significant strides being made in HIV prevention and treatment, adolescent girls and young women (AGYW) continue to be disproportionately affected by HIV infection globally. Many of the current studies on HIV prevalence globally have focused on...

Open access Research Article 10.9734/ISRR/2026/v15i2201