Neil A. Hagen

Assessment of study quality for systematic reviews: a comparison of the Cochrane Collaboration Risk of Bias Tool and the Effective Public Health Practice Project Quality Assessment Tool: methodological research

Susan Armijo‐Olivo, Carla Stiles, Neil A. Hagen et al. · Journal of Evaluation in Clinical Practice · 2010 · 1.5K citations

Breakthrough pain: definition, prevalence and characteristics

Russell K. Portenoy, Neil A. Hagen · Pain · 1990 · 916 citations

Sympathy, empathy, and compassion: A grounded theory study of palliative care patients’ understandings, experiences, and preferences

Shane Sinclair, Kate Beamer, Thomas F. Hack et al. · Palliative Medicine · 2016 · 492 citations · Full text

Cooperative Hernia Study

Johann Cunningham, Walley Temple, Philip Mitchell et al. · Annals of Surgery · 1996 · 366 citations · Full text

Quality of Life in Brain Tumor Patients: The Relative Contributions of Depression, Fatigue, Emotional Distress, and Existential Issues

Guy Pelletier, Marja J. Verhoef, Nasreen Khatri et al. · Journal of Neuro-Oncology · 2002 · 355 citations