Vital signs: awareness and treatment of uncontrolled hypertension among adults—United States, 2003–2010

Centers for Disease Control and Prevention. Vital signs: awareness and treatment of uncontrolled hypertension among adults— United States, 2003–2010. MMWR Morb Mortal Wkly Rep. 2012; 61(35);703-709.  

Data from the National Health and Nutrition Examination Survey (NHANES) 2003-2010 were analyzed to assess the prevalence of hypertension awareness and treatment among United States adults.

Subjects included in analysis (N=20,811) were aged ≥18 years and had self-reported, on-treatment hypertension, defined as:

  • Average systolic blood pressure (SBP) ≥140 mm Hg*
  • Average diastolic blood pressure (DBP) ≥90 mm Hg*

Uncontrolled hypertension was classified as avg SBP ≥140 mm Hg or DBP ≥90 mm Hg among those with hypertension. Subjects were considered unaware of hypertension if they responded “no” when asked whether a healthcare provider had ever told them that they had hypertension. Subjects were considered untreated if they answered “no” to either of these questions; considered treated if they answered “yes” to both questions:

  • Because of your high blood pressure/hypertension, have you ever been told to take prescribed medicine?
  • Are you currently taking BP-lowering medication?

Three groups of subjects were analyzed: unaware of hypertension, aware but not treated, and treated but still uncontrolled.

Results:
Prevalence of hypertension among US adults aged ≥18 years:

  • Hypertension: ~66.9 million; 30.4%
  • Controlled hypertension: ~31.1 million; 46.5%
  • Uncontrolled hypertension: ~35.8 million; 53.3%

Among those with uncontrolled hypertension:

  • Aware; treated: ~16.0 million; 44.8%
  • Aware; untreated: ~5.7 million; 15.8%
  • Unaware: ~14.1 million; 39.4%

Overall prevalence of uncontrolled hypertension among US adults aged ≥18 years with hypertension was 53.5%. When subgroups were examined, uncontrolled hypertension was most prevalent among the following groups:

  • Aged 18-44 years (61.6%)  
  • Hispanic (63.1%)†
  • No medical care in previous 12 months (93.3%)  
  • No usual source of health care (87.4%)  
  • No health insurance (71.8%)  

Overall prevalence of awareness and treatment of uncontrolled hypertension among US adults aged ≥18 years with hypertension was as follows, by group:  

  • Aware; treated: 44.8%; highest prevalence seen among adults aged ≥65 years (59.9%) and those who received health care ≥2 times in the past 12 months (55.3%).
  • Aware; untreated: 15.8%; highest prevalence seen among adults aged 18-44 years (25.4%); those with no usual source of care (25.6%); those with no health insurance (23.5%).
  • Unaware: 39.4%; highest prevalence seen among adults aged 18-44 years (56.6%); those who did not receive health care in the past 12 months (71.5%); those with no usual source of care (64.3%); those with no health insurance (51.9%).

*Based on average of ≤3 BP measurements

Weighted, adjusted estimates

 

October 2012  

This overview was created by KnowledgePoint360 Group, LLC, and was not associated with funding via an educational grant or a promotional/commercial interest.  

Related content: 

NHANES: Prevalence of Hypertension Awareness and Treatment Among US Adults  

NHANES: Hypertension Prevalence Among US Adults, 2003-2010  

NHANES: Uncontrolled Hypertension Prevalence by Selected Parameters in US Adults With Hypertension, 2003-2010  

NHANES: Prevalence of Awareness and Treatment of Uncontrolled Hypertension by Selected Parameters in US Adults With Hypertension, 2003-2010  

Key Facts: Awareness and Treatment of Uncontrolled Hypertension in US Adults, NHANES 2003-2010  

 

Last Modified: 3/23/2015