More than 75% of women over 75 have hypertension.
Vasan, Ramachandran S., Alexa Beiser, Sudha Seshadri, Martin G. Larson, William B. Kannel, Ralph B. D'Agostino, and Daniel Levy. Residual Lifetime Risk for Developing Hypertension in Middle-Aged Women and Men: The Framingham Heart Study. JAMA. 2002; 287(8): 1003-1010. http://jama.ama-assn.org/cgi/content/abstract/287/8/1003