Table 2:

Multivariable Adjusted Survey Regression results

Model	Pooled Sex Regression Coefficient (95% CI)	p-value	Model R square	Boys Regression Coefficient (95% CI)	p-value	Girls Regression Coefficient (95% CI)	p-value
SBP
Model 1	−0.01 (−0.06,0.04)	0.78	0.15	−0.02 (−0.07,0.03)	0.45	0.01 (−0.05,0.07)	0.8
Model 2	−0.06 (−0.10,−0.01)	0.02	0.27	−0.08 (−0.13,−0.03)	0.003	−0.03 (−0.09,0.03)	0.27
Model 3	0.06 (0,0.12)	0.05	0.28	0.05 (−0.02,0.11)	0.14	0.07 (0.0, 0.13)	0.04
DBP
Model 1	−0.28 (−0.32,−0.24)	<0.001	0.12	−0.35 (−0.40,−0.31)	<0.001	−0.21 (−0.26,−0.15)	<0.001
Model 2	−0.28 (−0.32,−0.24)	<0.001	0.14	−0.36 (−0.40,−0.31)	<0.001	−0.20 (−0.25,−0.15)	<0.001
Model 3	−0.13 (−0.19,−0.07)	<0.001	0.15	−0.20 (−0.27,−0.14)	<0.001	−0.08 (−0.15,−0.01)	0.02
PP
Model 1	0.28 (0.23, 0.32)	<0.001	0.07	0.33 ( 0.28, 0.38)	<0.001	0.22 ( 0.16, 0.27)	<0.001
Model 2	0.12 (0.07, 0.17)	<0.001	0.23	0.14 ( 0.09, 0.20)	<0.001	0.09 ( 0.03, 0.15)	0.002
Model 3	0.16 (0.09, 0.22)	<0.001	0.23	0.19 ( 0.12, 0.26)	<0.001	0.13 ( 0.06, 0.20)	<0.001
MAP
Model 1	−0.19 (−0.23,−0.15)	<0.001	0.15	−0.24 (−0.28,−0.20)	<0.001	−0.14 (−0.19,−0.09)	<0.001
Model 2	−0.21 (−0.24,−0.17)	<0.001	0.20	−0.26 (−0.30,−0.22)	<0.001	−0.14 (−0.19,−0.09)	<0.001
Model 3	−0.07 (−0.12,−0.02)	0.01	0.22	−0.12 (−0.18,−0.06)	<0.001	−0.03 (−0.09, 0.03)	0.31

Regression coefficient indicates mmHg change in SBP, DBP, PP, or MAP per year. Model R square indicates the proportion of variance accounted for in the outcome by included variables at each step.

Model 1 includes variables Age, Sex, and Yearly trend.

Model 2 includes Model 1 variables and race/ethnicity, height, heart rate, continuous BMI- Z-Score, daily sodium intake (and MAP for PP model only).

Model 3 includes Model 2 variables and blood lead concentration as a continuous variable.

Abbreviations: 95%CI- 95% confidence intervals; SBP- systolic blood pressure; DBP- diastolic blood pressure; PP- pulse pressure; MAP- mean arterial pressure; BMI- body mass index