Table 4 Initial serum zinc level: Serum zinc level within the first 48 hours among infants born in Epoch-2 excluding infants on comfort care only and those with severe congenital anomalies. a. Quadratic normative regression vs gestational age. b. Multivariate analysis of the ratio of initial serum zinc level to GA-expected value from quadratic regression versus prenatal and early neonatal variables.
From: Improved linear growth after routine zinc supplementation in preterm very low birth weight infants
a | |||
|---|---|---|---|
Variable | Beta coefficient (standard error) | 95% Confidence interval | P-value |
Gestational age (by week) | −0.2620 (0.1065) | −0.4708, −0.0532 | 0.014 |
Gestational age squared | +0.0036 (0.0018) | 0.00002, 0.0072 | 0.049 |
Intercept | +5.580 (1.5309) | 2.679, 8.580 | < 0.001 |
b | |||
|---|---|---|---|
Variable | Beta coefficient (standard error) | 95% Confidence interval | P-value |
Race/ethnicity | < 0.001 | ||
Hispanic | Ref | Ref | Ref |
Non-Hispanic Black | 0.030 (0.036) | −0.040, +0.100 | 0.40 |
Non-Hispanic White | −0.098 (0.109) | −0.311, +0.116 | 0.37 |
Other | −0.248 (0.038) | −0.321, −0.174 | < 0.001 |
Maternal BMI (kg/m2)a | 0.03 | ||
< 18.5 | Ref | Ref | - |
18.5– < 25 | −0.445 (0.169) | −0.776, −0.113 | 0.009 |
25– < 30 | −0.385 (0.168) | −0.714, −0.057 | 0.02 |
\(\ge 30\) | −0.357 (0.166) | −0.683, −0.032 | 0.03 |
Material community deprivation index > 0.30 | −0.107 (0.042) | −0.189, −0.026 | 0.01 |
Prenatal care | +0.208 (0.039) | 0.132, 0.285 | < 0.001 |
Pregnancy-induced hypertension | 0.100 (0.036) | 0.030, 0.170 | 0.005 |
Antenatal steroids | −0.175 (0.045) | −0.263, −0.087 | < 0.001 |
Intercept | +1.376 (0.176) | 1.032, 1.721 | < 0.001 |
