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A point-score system superior to blood pressure measures alone for predicting incident hypertension: Tehran Lipid and Glucose Study.
MedLine Citation:
PMID:  21720268     Owner:  NLM     Status:  Publisher    
OBJECTIVES: To examine whether modeling a set of readily available information could add to predictive performance of blood pressure measures. METHOD AND RESULTS: From participants of the ongoing Tehran Lipid And Glucose Study, which has been followed for 6 years, 4656 (2695 women) nondiabetic adults, free from hypertension at baseline with no history of cardiovascular disease (mean age 42 years), were selected for the current analyses. We ascertained 805 cases of incident hypertension. Incident rate (per 1000 person-years) was 29.3 [95% confidence interval (CI) 26.7-32.1] for women and 30.9 (95% CI 27.8-34.3) for men (P = 0.457). In multivariable analyses, age, SBP, and DBP significantly contributed to the risk of incident hypertension in both sexes, waist circumference and family history of premature cardiovascular disease among women, and smoking among men. A point-score system for predicting incident hypertension was developed by converting Weibull regression coefficients of predictors to integer values and its performances were compared with those of SBP and DBP. The C-statistic for the prediction model was 0.730 among women and 0.741 among men, and calibration was good in both sexes. Relative integrated discrimination improvement and cut-point-free net reclassification improvement for the point-score system vs. SBP ranged between 22.0 and 69.7%. The corresponding figures for DBP ranged between 29.6 and 51.3%. CONCLUSION: In this large, community-based study, the simplified utilization of the survival regression models was superior to blood pressure measures alone for predicting incident hypertension.
Mohammadreza Bozorgmanesh; Farzad Hadaegh; Yadollah Mehrabi; Fereidoun Azizi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-6-30
Journal Detail:
Title:  Journal of hypertension     Volume:  -     ISSN:  1473-5598     ISO Abbreviation:  -     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-7-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8306882     Medline TA:  J Hypertens     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
aPrevention of Metabolic Disorders Research Center, Research Institute for Endocrine Sciences bDepartment of Health and Community Medicine cEndocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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