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. Author manuscript; available in PMC: 2009 Sep 15.
Published in final edited form as: Am J Cardiol. 2008 Jul 9;102(6):761–766. doi: 10.1016/j.amjcard.2008.04.057

Table 3.

Statistically Significant Correlations between Markers for Cardiomyocyte Injury and Birth Characteristics in 32 Otherwise Healthy Neonates

Variable 1 Variable 2 N Spearman’s rho P1
Umbilical Cord Blood
High sensitivity C-reactive protein Umbilical cord myoglobin 22 −0.56 0.006
High sensitivity C-reactive protein Umbilical cord cardiac troponin I 22 −0.67 < 0.001
High sensitivity C-reactive protein Umbilical cord creatine kinase-MB 16 −0.65 0.007
Cardiac troponin I Umbilical cord myoglobin 23 0.41 0.053
Cardiac troponin I Umbilical cord creatine kinase-MB 16 0.58 0.019
Cardiac troponin T Positive cervical culture 24 0.41 0.046
Creatine kinase-MB Umbilical cord myoglobin 16 0.81 < 0.001
Neonatal Serum
Myoglobin Neonatal creatine kinase-MB 15 0.65 0.009
Creatine kinase-MB Neonatal high sensitivity C-reactive protein 13 0.58 0.040
High sensitivity C-reactive protein Length of stay 20 0.67 0.001
Cardiac troponin T Neonatal high sensitivity C-reactive protein 16 0.66 0.005
Cardiac troponin T Length of stay 17 0.50 0.040
Other Variables
Birth weight Gestational age 32 0.51 0.003
Birth weight Ballard score2 32 0.50 0.004
Birth weight Weight for gestational age 32 0.50 0.004
Ballard score2 Gestational age 32 0.67 < 0.001
Length of stay Stage 2 labor 30 −0.43 0.019
1

P-value for the null hypothesis that Spearman’s correlation = 0.

2

The Ballard score is a valid and accurate gestational assessment tool comprised of multiple assessments of neuromuscular and physical maturity for the entire newborn infant population.6