I argue that the term “risk factor” is ambiguous, and that this semantic ambiguity has resulted in methodological confusion. The paper was published in the Christmas Edition of the BMJ, received coverage in the press, and was extensively discussed on social media (Altmetrics score: 220).
Recommended citation: Huitfeldt, A. "Is caviar a risk factor for being a millionaire?". BMJ 2016;355:i6536.