The relationship between sitting height, sitting height to height ratio with blood pressure among Polokwane private school children aged 6–13 years

Table 2 Linear regression coefficients (β), P-value and 95% confidence intervals for the association between sitting height (SH), SH to height ratio (SH/H) and blood pressure among participants

	Unadjusted				Adjusted for age, gender and BMI
	Coefficient (β)	95% Cl		P-value	Coefficient (β)	95% Cl		P-value
SBP (mmHg)
Height (cm)	0.540	0.221	0.387	< 0.001	0.304	0.221	0.387	< 0.001
SH (cm)	1.318	1.217	1.418	< 0.001	0.691	0.509	0.872	< 0.001
SH/H	−142.147	−177.302	−106.991	< 0.001	−16.336	−51.482	18.810	< 0.362
DBP (mmHg)
Height (cm)	0.254	0.217	0.291	< 0.001	0.139	0.069	0.216	< 0.001
SH (cm)	0.641	0.555	0.727	< 0.001	0.304	0.148	0.460	< 0.001
SH/H	−53.111	−80.461	−25.760	< 0.001	−9.876	−39.692	19.940	0.516

CI confidence interval, SBP systolic blood pressure, DBP diastolic blood pressure, BMI body mass index