Intended for healthcare professionals

CCBYNC Open access
Research

Revisiting the association of blood pressure with mortality in oldest old people in China: community based, longitudinal prospective study

BMJ 2018; 361 doi: https://doi.org/10.1136/bmj.k2158 (Published 05 June 2018) Cite this as: BMJ 2018;361:k2158

Linked Editorial

Managing blood pressure in older adults

Re: Revisiting the association of blood pressure with mortality in oldest old people in China: community based, longitudinal prospective study

As noted previously by Dr Freedman and myself (https://twitter.com/tomhestonmd/status/1004735850209423361), this article makes a significant mistake in describing their data when they say that "Compared with a systolic blood pressure value of 129 mmHg, risk of all cause mortality decreased for values lower than 107 mm Hg." They should have stated that the risk of all cause mortality increased for systolic blood pressure values lower than 107 mmHg, not decreased.

Unfortunately this error has now been propagated into the Medline database as well (https://www.ncbi.nlm.nih.gov/pubmed/29871897). A U shaped curve in this research means that mortality increases for systolic blood pressures above 154 mmHg, increases for systolic blood pressures below 107, and is lowest for systolic blood pressures around 129 mmHg.

Competing interests: No competing interests

05 August 2018
Thomas F Heston
Physician
Washington State University
USA