Table 10.

Mixed-Model Parameter Estimates of Mean Systolic Blood Percentiles over Time by Race/Ethnicity among Male Children with Blood Pressure Values across at Two or More Age Periods^a

N = 1315	Age-Adjusted		Fully Adjusted Model
	Mean (CI)	P value	Mean (CI)	P value
Mean systolic BP percentiles for 5-years-old at index visitb
White (ref), n=792	46.79 (44.12, 49.46)	Ref	46.78 (44.14, 49.41)	Ref
Black, n=389	42.59 (38.26, 46.92)	0.102	43.6 (39.03, 48.16)	0.227
Hispanic, n=134	42.21 (34.85, 49.57)	0.249	43.06 (35.66, 50.47)	0.351
Segment-specific slope (Δ/year)
White
Age <9 yrs	1.75 (0.83, 2.66)	<0.001	1.70 (0.78, 2.62)	<0.001
Age 9–12 yrs	−0.38 (−1.58, 0.82)	0.538	−0.43 (−1.64, 0.78)	0.483
Age 12+ yrs	−1.76 (−2.80, −0.72)	<0.001	−1.71 (−2.76, −0.67)	0.001
Black
Age <9 yrs	3.17 (1.70, 4.63)	<0.001	2.92 (1.36, 4.47)	<0.001
Age 9–12 yrs	−2.12 (−3.85, −0.38)	0.017	−2.32 (−4.17, −0.48)	0.013
Age 12+ yrs	−1.66 (−3.02, −0.31)	0.016	−1.45 (−2.88, −0.03)	0.046
Hispanic
Age <9 yrs	3.35 (0.89, 5.82)	0.008	3.13 (0.63, 5.62)	0.014
Age 9–12 yrs	−3.16 (−6.09, −0.23)	0.035	−3.31 (−6.29, −0.34)	0.029
Age 12+ yrs	−0.58 (−2.79, 1.64)	0.610	−0.43 (−2.69, 1.83)	0.709
Difference in segment-specific slope (Δ/year) between races
Black vs White
Age <9 yrs	1.42 (−0.29, 3.13)	0.104	1.22 (−0.54, 2.97)	0.174
Age 9–12 yrs	−1.74 (−3.84, 0.36)	0.104	−1.89 (−4.04, 0.25)	0.084
Age 12+ yrs	0.10 (−1.60, 1.79)	0.912	0.26 (−1.47, 1.98)	0.770
Hispanic vs White
Age <9 yrs	1.61 (−1.02, 4.23)	0.230	1.43 (−1.20, 4.06)	0.287
Age 9–12 yrs	−2.78 (−5.94, 0.38)	0.084	−2.88 (−6.06, 0.3)	0.076
Age 12+ yrs	1.18 (−1.26, 3.62)	0.342	1.28 (−1.18, 3.74)	0.307

BMI, body mass index; BP, blood pressure; CI, confidence interval; Δ, change

^aModel 1: adjusted for index visit age; Fully adjusted model adjusted for index visit age, health insurance status (commercial insurance as referent), and index visit body mass index.

^bThe index visit refers to the first visit of record for each child