observational

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In recent years, several observational studies have suggested that GLP-1 drugs may be associated with lower risks for certain cancers or improved outcomes among cancer survivors.

From Science Daily • Jun. 6, 2026

However, researchers stress that observational studies alone cannot prove cause and effect.

From Science Daily • Jun. 6, 2026

Because the research is observational, it can’t prove that ultraprocessed foods cause dementia and cognitive impairment.

From The Wall Street Journal • Jun. 3, 2026

Because the study was observational and conducted at a single medical center, it cannot prove that low vitamin D directly caused the increase in pain.

From Science Daily • May 20, 2026

Both theories lack observational evidence: no one has ever seen a giant tortoise with the earth on its back, but then, no one has seen a superstring either.

From "A Brief History of Time: And Other Essays" by Stephen Hawking