Research Article

Tracking of Blood Pressure in Children and Adolescents in Germany in the Context of Risk Factors for Hypertension

Table 3

Predictors of hypertensive BP at six-year follow-up in children and adolescents in Germany.

univariable analysismultivariable analysis
3- to 10-year-olds (at baseline)OR (95% CI)p-valueOR (95% CI)p-value

Sex
 MaleRef0.50Ref0.19
 Female1.09 (0.85-1.39)1.21 (0.91-1.59)

Age1.14 (1.08-1.21)<0.0011.15 (1.08-1.23)<0.001

BP t0
 normal (<P95)Ref<0.001Ref<0.001
 hypertensive (≥P95)4.44 (3.14-6.28)4.25 (2.90-6.23)

BMI trajectory (t0 to t1)
 persistently low or normalRef<0.001Ref<0.001
 resolution1.74 (0.96-3.16)1.64 (0.86-3.11)
 persistently overweight/obesity3.87 (2.67-5.61)2.70 (1.78-4.12)
 incident overweight/obesity3.95 (2.83-5.51)4.44 (3.08-6.42)

Sport activities (times/week)
 <1Ref0.14Ref0.07
 1-21.21 (0.85-1.73)1.30 (0.87-1.92)
 ≥31.42 (0.99-2.02)1.58 (1.06-2.35)

Parental hypertension
 NoRef0.02Ref0.48
 Yes1.38 (1.06-1.80)1.11 (0.83-1.49)

Low birthweight (<2500g)
 NoRef0.59Ref0.69
 Yes1.14 (0.70-1.88)1.12 (0.64-1.96)

11- to 17-year-olds (at baseline)

Sex
 MaleRef<0.001Ref<0.001
 Female0.37 (0.22-0.61)0.33 (0.18-0.61)

Age1.22 (1.07-1.40)<0.011.21 (1.03-1.42)0.02

BP t0
 normal (<P95)Ref<0.001Ref 0.001
 hypertensive (≥P95)3.41 (1.87-6.23)3.35 (1.60-7.01)

BMI trajectory (t0 to t1)
 persistently low or normalRef0.07Ref0.32
 resolution1.82 (0.58-5.70)0.85 (0.17-4.19)
 persistently overweight/obesity2.23 (1.19-4.16)1.96 (0.89-4.29)
 incident overweight/obesity1.50 (0.73-3.08)1.59 (0.65-3.88)

Physical activities (hours/week)
 ≤2.0Ref0.24Ref0.42
 2.1-4.91.76 (0.76-4.07)1.75 (0.69-4.40)
 5.0-31.01.93 (0.90-4.13)1.70 (0.74-3.91)

Parental hypertension
 NoRef0.03Ref0.04
 Yes1.78 (1.07-2.95)1.85 (1.02-3.33)

Low birthweight (<2500g)
 NoRef0.46Ref0.56
 Yes0.57 (0.13-2.50)0.62 (0.12-3.16)

Hypertensive BP: SBP or DBP at or above the 95th age-, sex-, and height-specific percentile for children and adolescents under 18 years or BP ≥140/90 mmHg irrespective of the percentile; for adults aged 18 or older: ≥140/90 mmHg.
OR = odds ratio BP = blood pressure.