Document Detail

Is the 'rule of halves' in hypertension still valid?--Evidence from the Chennai Urban Population Study.
MedLine Citation:
PMID:  12725257     Owner:  NLM     Status:  MEDLINE    
AIM OF THE STUDY: The aim of the present study was to assess the applicability of the rule of halves in an urban population in South India. METHODS: The Chennai Urban Population Study (CUPS) is an ongoing population based study involving two residential colonies representing a middle and lower socio-economic status in Chennai city. The response rate for the study was 90.1%. Based on a glucose tolerance test (GTT), the study subjects were categorized as having normal glucose tolerance test (NGT), impaired glucose tolerance test (IGT) or diabetes. Blood pressure was measured for all the study subjects and the subjects were classified as hypertensive using the criteria, systolic blood pressure (SBP) > or = 140 mm Hg and/or diastolic blood pressure > or = 90 mmHg and/or known hypertensives and/or treatment with antihypertensive drugs. Controlled hypertension was defined as SBP < 140 mmHg and DBP < 90 mmHg. RESULTS: The overall prevalence of hypertension in this population is 22.1% (279/1262). Of these 279 individuals with hypertension, only 37.3% (104/279) were known hypertensives. Of the 104 known hypertensives, only 52 subjects (50%) were under any kind of antihypertensive therapy. Of these 52 individuals, only 21 (40%) had blood pressure under control. Prevalence of hypertension was higher in subjects with glucose intolerance. Awareness and treatment of hypertension was slightly higher among the diabetic hypertensive subjects. Analysis on the different social classes revealed that the prevalence, awareness and treatment of hypertension to be significantly higher among the middle income group compared to lower income group. CONCLUSION: The rule of halves is still valid in this urban South Indian population and thus the awareness, treatment and control measures for hypertension are still inadequate in this population.
R Deepa; C S Shanthirani; R Pradeepa; V Mohan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Association of Physicians of India     Volume:  51     ISSN:  0004-5772     ISO Abbreviation:  J Assoc Physicians India     Publication Date:  2003 Feb 
Date Detail:
Created Date:  2003-05-02     Completed Date:  2003-05-23     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7505585     Medline TA:  J Assoc Physicians India     Country:  India    
Other Details:
Languages:  eng     Pagination:  153-7     Citation Subset:  IM    
Madras Diabetes Research Foundation Gopalapuram, Chennai, India.
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MeSH Terms
Delivery of Health Care / statistics & numerical data*
Hypertension / diagnosis*,  epidemiology,  therapy*
India / epidemiology
Middle Aged
Urban Population / statistics & numerical data*
Comment In:
J Assoc Physicians India. 2003 Feb;51:151-2   [PMID:  12725256 ]
J Assoc Physicians India. 2003 Sep;51:931; author reply 931-2   [PMID:  14710992 ]

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