Is happiness U-shaped everywhere? Age and subjective well-being in 145 countries.

J Popul Econ · 2021 · PMC7480662 · PMID 32929308

Europe PMC DOI

hedged sentence

—

closest p

—

boldest claim

The sentences

highly significantno p-value reported

Adding controls produces a clean and highly significant U-shape which turns over after the age of seventy and remains broadly flat thereafter.

also in 132,142 other papers

Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.