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Table 4 Sex-specific characteristics of adolescents, aged 15–19 years: SuRFNCD 2007–2011

From: National trends of pre-hypertension and hypertension among Iranian adolescents across urban and rural areas (2007–2011)

Year Girls Boys
2007 (n = 1302) 2008 (n = 1339) 2009 (n = 1319) 2011 (n = 498) 2007 (n = 1634) 2008 (n = 1649) 2009 (n = 1543) 2011 (n = 431)
Age (years) 17.67 ± 0.03 17.69 ± 0.03 17.57 ± 0.04 17.69 ± 0.06 17.50 ± 0.03 17.46 ± 0.03 17.61 ± 0.03 17.70 ± 0.07
Residential area (%)
 Urban 751 (57.7) 811 (60. 6) 716 (54.3) 332 (66.7) 967 (59.2) 1008 (61.1) 834 (54.1) 283 (65.7)
 Rural 551 (42.3) 528 (39.4) 603 (45.7) 166 (33.3) 667 (40.8) 641 (38.9) 709 (45.9) 148 (34.3)
Physical activity (% ± SE)
 High 19.66 ± 1.08 19.21 ± 1.05 18.37 ± 1.05 16.07 ± 1.63 63.56 ± 1.19 57.29 ± 1.16 57.70 ± 1.27 52.50 ± 2.36
 Moderate 35.68 ± 1.35 27.97 ± 1.22 30.91 ± 1.31 23.90 ± 1.83 20.70 ± 1.02 19.28 ± 0.97 22.60 ± 1.10 20.90 ± 1.98
 Low 44.65 ± 1.37 52.80 ± 1.34 50.71 ± 1.39 60.01 ± 2.09 15.73 ± 0.90 23.42 ± 0.98 19.68 ± 1.04 26.58 ± 2.05
BMI(kg/m2) 21.78 ± 0.09 21.92 ± 0.10 21.94 ± 0.11 22.03 ± 0.18 21.33 ± 0.08 21.37 ± 0.08 21.40 ± 0.09 21.27 ± 0.17
SBP(mmHg) 109.89 ± 0.31 109.35 ± 0.31 109.63 ± 0.31 112.21 ± 0.52 119.21 ± 0.30 117.63 ± 0.30 118.63 ± 0.30 119.61 ± 0.56
DBP(mmHg) 72.58 ± 0.25 72.71 ± 0.24 72.71 ± 0.25 71.74 ± 0.41 72.20 ± 0.23 72.40 ± 0.22 73.29 ± 0.24 71.49 ± 0.45
  1. Age, physical activity, BMI, SBP, and DBP values are mean ± SEM
  2. Variables (except residential area) are weighted according to residential area