The phrase "improved survival" means that more people are staying alive or living longer, often due to advancements in medicine or better conditions. Full definition
In several studies, supportive marriages have been shown to improve survival rates in people with cancer, including prostate, lung, and colon cancer. (health.com)
I learned this lesson the hard way in graduate school when I had to determine whether certain conditions improved the survival of cell in my culture system. (nextscientist.com)
Our researchers show how more frequent, higher doses of chemotherapy improves survival in some young patients by two - thirds. (cancerresearchuk.org)