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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Pediatr Neurol. 2016 Mar 3;59:41–46. doi: 10.1016/j.pediatrneurol.2016.02.012

Table 5.

Multivariable model of serum Mg concentration stratified by gestational age > or <32 weeks; and combined risk for epilepsy/motor impairment. RR, relative risk ratio; LCL and UCL, 95% lower and upper confidence levels.

<=32 Weeks gestation
Parameter Level RR LCL UCL p value
Serum Mg 0.79 0.59 1.1 0.12
Maternal Mg 1.2 0.72 2.1 0.45
Maternal steroids 0.74 0.47 1.2 0.19
APGAR 5 min 0.89 0.81 0.99 0.025
Neonatal infection 1.5 0.85 2.5 0.17
VASOPRESSOR 1.1 0.64 1.8 0.82
BIRTH_WT 0.37 0.23 0.57 <0.0001
>32 Weeks gestation
Parameter Level RR LCL UCL p value
Serum Mg 1.2 0.74 1. 9 0.49
Maternal Mg 0.81 0.33 2.0 0.64
Maternal Steroids 0.36 0.11 1.2 0.087
APGAR_5 0.83 0.68 1.0 0.046
Neonatal Infection 1.7 0.87 3.1 0.12
VASOPRESSOR 1.2 0.45 3.3 0.69
BIRTH_WT 0.74 0.50 1.1 0.14