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research letter

Indian Pediatr 2016;53: 165-166

Prevalence of Hypertension Among School Children in a Rural Area of Tamil Nadu

 

D Kishorkumar, *P Stalin, R Vishnu Prasad and Zile Singh

Department of Community Medicine, Pondicherry Institute of Medical Sciences,
Puduchermamil Nadu, India.
Email: [email protected]

  

A cross-sectional study was conducted to measure the prevalence of hypertension among 310 rural school children in Tamil Nadu. The prevalence of hypertension and pre-hypertension was 10% and 14.2%, respectively. Prevalence was significantly higher among and private school students. We recommend that children should be screened for hypertension for early diagnosis and prevention of complications.

Keywords: Adolescent, Epidemiology, Hypertension.


High blood pressure (BP) in children has been considered as a potential risk factor for hypertension in adulthood. Blood pressure varies with age, sex and height in children; therefore the diagnosis is complicated and nearly 75% of hypertensive children remain undiagnosed [1]. This study determined the prevalence of hypertension and pre-hypertension among school children in a rural area of district Villupuram, Tamil Nadu.

This cross-sectional study was conducted among school children aged 11-15 years in 2013. Two schools (1 Government and 1 Private) were selected purposively, and all the students belonging to class VI to X were included. A total of 310 school children (173 boys and 137 girls) were interviewed and examined. Automated BP measuring apparatus (OMRON) was used. Hypertension was defined as average systolic BP and/or diastolic BP ³95th percentile for gender, age, and height on ³3 occasions. Pre-hypertension was defined as average SBP or DBP levels ³90th percentile but < 95th percentile. Data was analyzed using SPSS version 17.0. Chi-square test was used for analysis and P value <0.05 was considered statistically significant. Institutional Ethics Committee clearance was obtained. Permission was obtained from school authorities and written consent from the parents. Assent was also obtained from the children.

Participants were equally distributed across the different age groups (data not shown). The overall prevalence of hypertension in our study participants was 10% and prevalence of pre-hypertension was 14.2%. There was significant difference in prevalence of hypertension between students of government or private school (Table I).

TABLE I Distribution of Study Participants, Based on Selected Determinants  and Hypertension (N=310)
Determinants Hypertension, n (%) Pre-hypertension, n (%) Normal, n (%) Total P value
School          
  Government 9 (5.5) 23 (14.0) 132 (80.5) 164 0.017
  Private 22 (15) 21 (14.4) 103 (70.6) 146
Age          
  10-12 16 (12.9) 17 (13.7) 91 (73.4) 124 0.967
  13-15 15 (8.06) 27 (14.5) 144 (77.4) 186
Gender          
  Males 14 (8.1) 20. (11.6) 139 (80.3) 173 0.111
  Females 17 (12.4) 24 (17.5) 96 (70.1) 137
Body Mass Index          
  Obesity & Overweight 3 (11.6) 5 (19.2) 18 (69.2) 26 0.553
  Normal 19 (12.3) 23 (14.8) 113 (72.9) 155
  Underweight 9 (7.0) 16 (12.4) 104 (80.6) 129
Total 31 (10.0) 44 (14.2) 235 (75.8) 310

The prevalence of hypertension in our study was higher as compared to some earlier studies from similar setting [2,3]. This could be due to different socio-demographic characteristics. The prevalence of pre-hypertension in our study was similar to that of study done by Rahman, et al. [3]. Increasing prevalence of hypertension might be due to childhood obesity as well as growing awareness of the diseases [3-6]. We suggest that children should be screened regularly for hypertension to prevent the complications in adulthood.

Contributors: DK: Design, data collection, analysis and drafting the manuscript; PS: Conception, data collection, analysis and revising the manuscript; RVP: Design, data collection, analysis and revising the manuscript; ZS: Conception, design, data interpretation.

Funding: Pondicherry Institute of Medical Sciences;

Competing interests: None stated.

References

1. Aglony M, Acevedo M, Ambrosio G. Hypertension in adolescents. Expert Rev Cardiovas Therapy. 2009;7: 1595-603.

2. Buch N, Goyal JP, Kumar N, Parmar I, Shah VB, Charan J. Prevalence of hypertension in school going children of Surat city, Western India. J Cardiovas Dis Res. 2011;2:228-32.

3. Rahman AJ, Qamar FN, Ashraf S, Khowaja ZA, Tariq SB, Naeem H. Prevalence of hypertension in healthy school children in Pakistan and its relationship with body mass index, proteinuria and hematuria. Saudi J Kidney Dis Transpl. 2013;24:408-12.

4. Lu X, Shi P, Luo CY, Zhou YF, Yu HT, Guo CY, et al. Prevalence of hypertension in overweight and obese children from a large school-based population in Shanghai, China. BMC Public Health. 2013;13:24.

5. Schiel R, Beltschikow W, Kramer G, Stein G. Overweight, obesity and elevated blood pressure in children and adolescents. European J Med Res. 2006;11:97-101.

6. Acosta AA, Samuels JA, Portman RJ, Redwine KM. Prevalence of persistent prehypertension in adolescents. J Pediatr. 2012;160:757-61.

 

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