Between 1998 and 2009, the number of inpatient discharged from short-stay hospitals with high blood pressure as the first-listed diagnosis increased from 439,000 to 579,000. The number of all-listed discharges increased from 7.6 million to 11.6 million.
Roger, Veronique L., Alan S. Go, Donald M. Lloyd-Jones, Emelia J. Benjamin, Jarret D. Berry, et al.; on behalf of the American Heart Association Statistics Committee and Stroke Statistics Subcommittee. Heart Disease and Stroke Statistics–2012 Update. Circulation. 2012; 125: e2-e220. http://circ.ahajournals.org/content/125/1/e2