Cancer Companion Guide

An Evidence-Based Framework for Patients, Caregivers, Clinicians, Investors, and Health Writers Cancer studies are often misunderstood because headlines emphasize dramatic results without context. To avoid being misled, first identify the study type: preclinical research (lab or animal studies) cannot prove effectiveness in humans, while randomized controlled trials (RCTs) provide stronger evidence. Next, check the trial phase—Phase I tests safety, Phase II explores activity, and Phase III determines whether treatment should change clinical practice. Always compare relative risk with absolute risk reduction . A “50% reduction” may translate into only a small real-world benefit. Look at meaningful outcomes like overall survival and quality of life rather than surrogate endpoints such as progression-free survival. Review sample size, hazard ratios, confidence intervals, and funding sources. Finally, ask whether respected organizations like the National Comprehensive Cancer Network or ...