Table 2.

Casual (n = 347) and ambulatory BP (n = 226) status of study population

VariableSBPDBP
Casual BP
    mmHg (median [IQR])107 (100 to 117)65 (59 to 74)
    ≥95th percentile (n [%])43 (12)37 (11)
24-h BP
    mmHg (median [IQR])110 (101 to 117)66 (60 to 71)
    ≥95th percentile (n [%])37 (16)38 (17)
    load (%; median [IQR])15 (4 to 37)13 (4 to 34)
    load ≥25% (n [%])89 (39)80 (35)
Wake BP
    mmHg (median [IQR])116 (108 to 122)70 (66 to 76)
    ≥95th percentile (n [%])39 (17)35 (15)
    load (%; median [IQR])13 (2 to 35)8 (2 to 30)
    load ≥25% (n [%])81 (36)69 (31)
Sleep BP
    mmHg (median [IQR])102 (94 to 109)59 (53 to 64)
    ≥95th percentile (n [%])49 (22)50 (22)
    load (%; median [IQR])14 (0 to 42)16 (4 to 41)
    load ≥25% (n [%])86 (38)95 (42)
Dipping
    % (mean [IQR])11 (7 to 14)17 (12 to 21)
    abnormal (<10%)88 (39)36 (16)
BP statusa
    normotension106 (54)108 (55)
    white-coat hypertension3 (1.5)2 (1)
    masked hypertension66 (33)67 (34)
    confirmed hypertension23 (12)21 (11)
  • Casual hypertension defined as BP ≥95th percentile according to the National High Blood Pressure Education Program (NHBPEP) Fourth Report on the Diagnosis, Evaluation, and Treatment of High Blood Pressure in Children and Adolescents.25 Ambulatory hypertension defined as (1) mean wake and/or sleep SBP or DBP ≥95th percentile for ABPM and/or (2) SBP or DBP load ≥25%. BP status is based on combination of casual and ambulatory BP: (1) Normotensive: Normal casual and ambulatory BP; (2) confirmed hypertension: Presence of both casual and ambulatory hypertension; (3) white-coat hypertension: Casual hypertension in the presence of normal ambulatory BP; or (4) masked hypertension: Ambulatory hypertension in the presence of normal casual BP.

  • an = 198 for casual + ABPM.