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Patterns and Predictors of Prehypertension Among "Healthy" Urban Adults in India

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India, drcanands{at}yahoo.co.in

N. Ganesan, MD

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

S. Venkatesan, MD, DM

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

G. Gnanavelu, MD, DM

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

T. Subramaniam, MD, DM

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

V. Jaganathan, MD, DM

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

S. Elangovan, MD, DM

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

R. Alagesan, MD, DM

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

Smrita Dorairajan, MB

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

Ashwin Subramaniam, MB

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

K. Rafeeq, MD

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

C. Elangovan, MD

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

V. Rajendran, MD

Department of Cardiology, Madras Medical College and Research Institute, Chennai, India

Cardiovascular disease is still on the increase in India owing to changing socioeconomic factors and unhealthy lifestyles. Better understanding of the role of hypertension (HTN) has led to new Joint National Committee (JNC-7) guidelines for its diagnosis and management. The authors aimed to evaluate the predictors and correlates of prehypertension (PreHTN) among adults in urban India. Study design is a cross-sectional survey among 2,007 adults in Chennai in July 2003; 1,505 men and 502 women over the age of 18 years were studied. Demographic data collected by direct interview were the following: age, smoking, alcohol intake, type of work, exercise patterns, and monthly income. Anthropometric data of height, weight, and waist and hip dimensions were measured. Blood pressure (BP) was recorded thrice, with at least 15 minutes between readings 2 and 3. The mean of readings 2 and 3 was taken for the study. Of the 2,007 people studied, 951 (47.4%) had PreHTN and 696 (34.7%) had HTN. PreHTN was found in 46.6% of the men and 49.8% of the women. PreHTN was prevalent in 47.4% of adults, and another 34.7% had hypertension (Stage I, 20%, and Stage II, 14.7%). In urban India less than 18% of adults have normal BP of less than 120/80. Multiple logistic regression analysis after age and sex correction identified obesity, diet, family history and middle-income group as correlating with PreHTN. The factors that predict HTN were age, sex, smoking, alcohol intake, sedentary lifestyle, and type of work.

Angiology, Vol. 56, No. 5, 557-563 (2005)
DOI: 10.1177/000331970505600506


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