Posted by Xiaoqing Pan on August 11, 2018:

https://www.ncbi.nlm.nih.gov/pubmed/

Trajectories of Blood Pressure Elevation Preceding Hypertension Onset (PDF version – Please do not further distribute the PDF until the paper has become freely available from the journal)

A few risks (such as age, gender, smoking) are reported to be associated with hypertension. Age is of particular interest in the attached paper. Authors were looking for a common threshold level above which systolic blood pressure rise tends to accelerate in progression toward hypertension and they found a sharp increase of systolic blood pressure approximately 120 to 125 mm Hg, irrespective of age. It indicated that some risk factors rather than age, activated a sudden increase of systolic blood pressure around 120-125 mm Hg. The application of segmental regression is of interest as well.​

 Best and thanks,

 Xiaoqing