. Author manuscript; available in PMC: 2014 Aug 1.

Published in final edited form as: Pediatr Res. 2013 Nov 11;75(2):358–366. doi: 10.1038/pr.2013.209

Table 4.

MULTIPLE REGRESSION ANALYSIS OF PREDICTORS OF Z-WEIGHT FROM 40 WEEKS TO 14 YEARS (N=94)^a

Independent Variables	40 Weeks	8 Months	20 Months	8 Years	14 Years
Independent Variables	Beta (95% CI)	Beta (95% CI)	Beta (95% CI)	Beta (95% CI)	Beta (95% CI)
Demographics, Maternal BMI
Race (Black)	0.004 (−0.406,0.414)	−0.180 (−0.626,0.265)	−0.421 (−0.981,0.139)	0.014 (−0.377,0.406)	0.006 (−0.367,0.379)
Gender (male)	−0.084 (−0.449,0.282)	−0.558 (−1.051, −0.066)^*	−0.448 (−1.074,0.179)	−0.208 (−0.554,0.139)	−0.136 (−0.470,0.20)
z-SES	−0.027 (−0.253,0.199)	0.032 (−0.172,0.236)	0.046 (−0.218,0.310)	0.013 (−0.207,0.234)	0.033 (−0.177,0.244)
Maternal BMI^b	0.011 (−0.012,0.033)	0.048 (0.018,0.078)^**	0.060 (0.021,0.010)^**	0.056 (0.023,0.088)^†	0.065 (0.034,0.096)^†
Gender^aMaternal BMI	---	−0.044 (−0.085, −0.004)^*	−0.050 (−0.103,0.003)	−0.040 (−0.083,0.004)	−0.049 (−0.091, −0.008)^*
Gender^aRace	---	0.429 (−0.238,1.096)	0.594 (−0.245,1.433)	---	---
Birth and Perinatal Factors
Z-birth weight	0.388 (0.240,0.536)^†	0.501 (0.325,0.676)^†	0.310 (0.137,0.483)^*	---	---
Gestational age	---	0.120 (0.009,0.232)^*	---	---	---
Preeclampsia	---	---	---	---	---
Hyperalimentation^c	−0.016 (−0.023, −0.008)^†	---	---	---	---
Neonatal risk factors^d	---	---	---	---	---
Change in ZWT from birth to 40 weeks	---	---	---	---	---
Intermediate Growth (change in weight z score)
40 weeks to 8 months		0.595 (0.474,0.717)^†	0.655 (0.497,0.813)^*	0.565(0.436,0.694)^†	0.523 (0.397,0.649)^†
8 months to 8 years				0.732 (0.608,0.857)^†	0.622 (0.484,0.760)^†
8 years to 14 years					0.652 (0.430,0.874)^†
R-square	0.3911	0.6799	0.5647	0.7390	0.6857

Biologic mothers and their ELBW children;

p<0.05;

^**

p<0.01;

^†

p<0.001;

Maternal BMI was centered at its overall mean;

Duration (days);

Total number of neonatal risk factors.