TABLE 3.

Association of Birth Weight (g) and Postnatal Weight Gain^a With Hypertension Stratified by the Child's Age When Blood Pressure Was Measured and Birth Size for Gestational Age Among Boys and Girls

	Adjusted OR (95% CI)b
	Age 3 to Younger Than 4 Years	Age 4 to Younger Than 5 Years	Age >5 Years
Boys
Small for gestational age, n = 589	n = 154	n = 177	n = 258
Birth weight, g	1.001 (0.998–1.003)	1.001 (0.998–1.004)	1.001 (0.999–1.003)
Weight gain from birth, change in z score	2.12 (1.78–3.83)	0.69 (0.30–1.61)	2.09 (1.12–3.91)
Appropriate for gestation age, n = 6405	n = 1624	n = 2018	n = 2763
Birth weight, g	1.001 (1.0007–1.002)	1.001 (1.00–1.0012)	1.0015 (1.001–1.002)
Weight gain from birth, change in z score	1.80 (1.48–2.18)	1.37 (1.17–1.61)	2.17 (1.88–2.51)
Large for gestational age, n = 1182	n = 262	n = 386	n = 534
Birth weight, g	1.001(0.999–1.0020)	1.001 (1.00–1.002)	1.002 (1.001–1.003)
Weight gain from birth, change in z score	1.52 (1.06–2.17)	1.36 (1.00–1.86)	2.76 (2.04–3.72)
Girls
Small for gestational age, n = 684	n = 184	n = 217	n = 293
Birth weight, g	1.00 (0.997–1.002)	1.00 (0.998–1003)	1.004 (1.001–1.006)
Weight gain from birth, change in z score	1.04 (0.54–2.01)	1.69 (1.00–2.86)	2.91 (1.66–5.10)
Appropriate for gestational age, n = 5857	n = 1540	n = 1800	n = 2517
Birth weight, g	1.00 (0.9997–1.0001)	1.001 (1.00–1.0012)	1.001 (1.0006–1.002)
Weight gain from birth, change in z score	1.28 (1.05–1.56)	1.42 (1.20–1.69)	1.59 (1.39–1.82)
Large for gestational age, n = 873	n = 215	n = 268	n = 390
Birth weight, g	1.002 (1.0002–1.003)	1.0003 (0.999–1.002)	1.002 (1.001–1.003)
Weight gain from birth, change in z score	1.40 (0.92–2.15)	1.40 (0.98–2.00)	1.75 (1.22–2.52)

^aAdjusted for height, father's occupation, and the other weight variables in the table (ie, birth weight and postnatal weight gain were mutually adjusted).

^bWeight gain from birth through the time of the blood pressure measurement.