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Table 1 Basic characteristics of 6–17 years old schoolchildren with different high blood pressure subtype

From: Prevalence of high blood pressure subtypes and its associations with BMI in Chinese children: a national cross-sectional survey

Variable Total Boys(n = 32,064) Girls(n = 30,104) P
Mean(s.d.) Mean(s.d.) Mean(s.d.)
Age 10.8(3.3) 10.7(3.3) 10.9(3.3) <0.001
BMI 18.6(3.8) 18.8(3.9) 18.2(3.5) <0.001
SBP 104.3(12.2) 105.7(12.5) 102.8(11.6) <0.001
DBP 66.3(8.8) 66.8(9.0) 65.7(8.6) <0.001
HBP 5933(9.5%) 3262(10.2%) 2671(8.9%) <0.001
Normal BPa 56,235(90.5%) 28,802(89.8%) 27,433(91.1%)
HBP subtype
 ISHBPa 2263(3.6%) 1404(4.4%) 859(2.9%) <0.001
 IDHBPa 1992(3.2%) 1001(3.1%) 991(3.3%)
 SDHBPa 1678(2.7%) 857(2.7%) 821(2.7%)
nutritional status
 Underweighta 4456(7.2%) 2528(7.9%) 1928(6.4%) <0.001
 Normal weighta 43,121(69.4%) 20,365(63.5%) 22,756(75.6%)
 Overweighta 7888(12.7%) 4823(15.0%) 3065(10.2%)
 Obesitya 6703(10.8%) 4348(13.6%) 2355(7.8%)
  1. avalues are numbers and proportions (%). s.d. standard deviation, BMI body mass index, SBP systolic blood pressure, DBP diastolic blood pressure, HBP high blood pressure, SDHBP combined systolic and diastolic high blood pressure, IDHBP isolated diastolic high blood pressure, ISHBP isolated systolic high blood pressure