<qa>  What is the target for controlled BP in 50 of the 50 million Americans with hypertension?The Healthy People 2010 target calls for controlled BP in 50 of the 50 million Americans with hypertension. BP is currently controlled in only 27 of the population. These population figures are in contrast to data from clinical trials efficacy in which BP has been controlled in 70 to 80 of study participants. Poor BP control exists in spite of six sets of guidelines generated over the last 30 years in the United States. While there are many causes for poor control, several studies have found that physicians are frequently satisfied with uncontrolled BPs. Numerous strategies exist to assist physicians with achieving better BP control, but a consistent, effective approach to solving the problem has not been found. 