Table 1.

Demographic and Physical Characteristics of the Cohort by Change in BP Classification ^{a , b}

	Group I BP Up 2.9% (n=49)	Group II BP Down 6.2% (n=107)	Group III BP No Change 90.9% (n=1569)	P Value
				I vs III	II vs III	(I and II) vs III
Age, y	16.00±2.06	15.68±1.92	15.51±1.90	.44	.27	.20
Male	37.32 (33)	46.25 (64)	50.68 (774)	.50	.22	.27
Race				.04	.76	.14
White	66.80 (15)	64.20 (33)	65.28 (482)
Black	24.60 (25)	15.32 (32)	12.84 (454)
Mexican American	5.54 (6)	8.44 (27)	10.88 (443)
Other	3.07 (3)	12.03 (15)	11.00 (190)
Poverty (yes) b	29.32 (26)	35.49 (66)	38.50 (775)	.27	.56	.31
Height, cm	172.44±11.11	169.09±11.02	167.25±10.98	.16	.02	.02
Weight, kg	78.30±27.33	72.07±23.28	65.67±20.54	<.01	<.001	<.001
BMI z score	0.99±1.27	0.90±1.16	0.55±1.27	.01	.02	.003

Abbreviations: BMI, body mass index; BP, blood pressure. ^aContinuous variables presented as mean±standard deviation and categorical variables presented as percentage (number). P values calculated by weighted least‐squares or weighted logistic regression analyses.

^bPoverty defined as a poverty income ratio ≤1.