Related Experiment Video
Updated: Feb 22, 2026

Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer
Published on: October 31, 2025
Cancer patients' quality of life over the disease course: lessons from the real world
Abstract:
We examined the correlates of the Quality of Life Index (QLI) in three samples of cancer patients: newly diagnosed (N = 397), recipients of chemotherapy (N = 194), and terminal (N = 2046). The relative importance of physical, emotional, social, and disease symptom characteristics in predicting the QLI was compared across samples. Despite differences in data collection approaches (telephone, personal interview, or paper and pencil) and differences in patient characteristics, the QLI was a robust construct with its central organizing principle being physical functioning. In all samples, functioning, symptoms, depression, and social support were significant predictors of the QLI, while age and cancer type were only minimally related. The QLI significantly differentiated between patients at different disease phases and measured more than physiological functioning. However analyses suggested that the dominant factor constraining the range of human psychosocial functioning was physical condition.
Related Concept Videos
Bioavailability Study Design: Healthy Subjects Versus Patients
Cancer Survival Analysis
Cancer Therapies
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Treatment Resistant Cancers
Actuarial Approach
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
