A3725 Simplified height-specific blood pressure table for screening elevated or high blood pressure in Chinese children and adolescents

Abstract

Objectives: This study was aimed to evaluate the performance of four simplified methods for screening elevated BP and high BP in Chinese children and adolescents, compared to the 2017 Chinese child complex table based on sex, age and height. Methods: We developed a simplified blood pressure cut-offs within 9 height categories by 10 cm increments specifically for the Chinese children and adolescents to screen elevated BP (90th percentile) and high BP (95th percentile) according to the 2017 Chinese child complex table based on sex, age, and height. In addition, three other simplified methods (i.e., simplified table by age group, simplified formulas, and sex- and age-specific simplified table).Data from two population-based surveys including survey conducted in Jinan, China in 2013–2014 (n = 7837, 6 to 17 years) and survey conducted in Zibo, China in 2017 (n = 1515, 6 to 11 years). Results: The height-specific table for identifying high BP (in Jinan/Zibo data) had values of AUC (0.94/0.92), sensitivity (90.1%/85.0%), specificity (97.9%/98.3%), PPV (89.1%/90.0%), NPV (98.1%/97.3%), compared to the complex table. Its performance was similar to sex- and age-specific simplified table. In contrast, two other simplified methods were not satisfactory, with PPV ranged from 62.8% to 79.6% for identifying elevated BP and high BP. Conclusion: The simplified height-specific table performed similarly to the 2017 Chinese child complex table by sex, age, and height for identifying elevated BP and high BP in Chinese children and adolescents. This height-specific table seemed to be superior to three other simplified methods. This simplified table with only 18 values will be useful to improve detection and control pediatric high BP in clinical practice.