Re: Revisiting the association of blood pressure with mortality in oldest old people in China: community based, longitudinal prospective study
The abstract has a typo, and the figures for the main results are transposed.
"Compared with a systolic blood pressure value of 129
mm Hg, risk of all cause mortality decreased for values
lower than 107 mm Hg (from 1.47 (95% confidence
interval 1.01 to 2.17) to 1.08 (1.01 to 1.17)), and
increased for values greater than 154 mm Hg (from
1.08 (1.01 to 1.17) to 1.27 (1.02 to 1.58))"
To be U shaped, the risk of all cause mortality needs to increase at blood pressures lower than 107, from 1.08 to 1.47, as shown in the main results figure.
Competing interests: No competing interests