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

Table 2

Spearman rank-order correlation coefficients for six year-tracking of BP in children and adolescents in Germany.

Baseline age	n	Tracking coefficients
		SBP	DBP
3-6 years
All	1063	0.38	0.24
Male	530	0.33	0.19
Female	533	0.44	0.30
7-10 years
All	953	0.42	0.36
Male	481	0.41	0.30
Female	472	0.42	0.42
11-14 years
All	320	0.34	0.34
Male	155	0.43	0.32
Female	165	0.36	0.38
15-17 years
All	206	0.47	0.36
Male	103	0.50	0.34
Female	103	0.46	0.39

t₀-BP and t₁-BP in age-, sex-, and height-specific percentiles; t₀-BP in percentiles and t₁-BP in mmHg.
All Spearman rank-ordercorrelation coefficients were statistically significant at a p-value <0.001.