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Table 5 Unadjusted prevalence and trend of pre-hypertension and hypertension based on JNC-VII in Iranian adolescents: SuRFNCD 2007–2011

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

Year 2007 2008 2009 2011 P for trend
Girls
 Urban
  Pre-hypertension 18.18 (15.90–20.47) 17.66 (15.44–19.89) 18.04 (15.72–20.36) 19.92 (16.42–23.42) 0.624
  Hypertension 7.86 (6.23–9.49) 7.04 (5.63–8.46) 6.56 (5.08–8.04) 8.78 (6.30–11.27) 0.500
 Rural
  Pre-hypertension 21.99 (19.14–24.85) 21.47 (18.64–24.29) 21.93 (19.11–24.76) 23.89 (19.59–28.18) 0.322
  Hypertension 10.27 (8.14–12.39) 9.24 (7.20–11.28) 8.62 (6.68–10.55) 11.37 (8.22–14.53) 0.595
Boys
 Urban
  Pre-hypertension 29.40 (26.89–31.90) 27.57 (25.18–29.97) 32.26 (29.53–34.99) 29.20 (24.79–33.60) 0.936
  Hypertension 12.94 (11.08–14.79) 11.25 (9.53–12.97) 12.38 (10.43–14.34) 15.18 (11.47–18.89) 0.108
 Rural
  Pre-hypertension 30.75 (27.78–33.71) 28.66 (25.77–31.56) 33.67 (20.62–36.72) 30.78 (25.91–35.66) 0.244
  Hypertension 8.87 (7.13–10.62) 7.67 (6.08–9.26) 8.48 (6.77–10.18) 10.50 (7.80–13.19) 0.390