Table 3.

Correlates of iFGF-23 Levels

VariableUnivariate AnalysisMultivariate Analysis
βP ValueβP Value
Neonatal factors
    Gestational age (weeks)0.201.111
    Birth weight (kg)0.118.353
    Sex−0.072.573
    Length (cm)0.083.515
    Cord blood glucose (ng/ml)−0.138.283
    Cord blood C-peptide (ng/ml)0.290.0230.267.047
    Ln ferritin−0.195.129−0.175.180
    Lower first Apgar score−0.151.254
Maternal factors
    Multiparity−0.240.056−0.270.053
    Delivery method (vaginal vs cesarean)0.196.120
    Maternal age (y)0.189.139
    Black race−0.246.070−0.134.339
    Labor complication−0.024.848
VariableUnivariate AnalysisMultivariate Analysis
βP ValueβP Value
Neonatal factors
    Gestational age (weeks)0.201.111
    Birth weight (kg)0.118.353
    Sex−0.072.573
    Length (cm)0.083.515
    Cord blood glucose (ng/ml)−0.138.283
    Cord blood C-peptide (ng/ml)0.290.0230.267.047
    Ln ferritin−0.195.129−0.175.180
    Lower first Apgar score−0.151.254
Maternal factors
    Multiparity−0.240.056−0.270.053
    Delivery method (vaginal vs cesarean)0.196.120
    Maternal age (y)0.189.139
    Black race−0.246.070−0.134.339
    Labor complication−0.024.848

Analysis with linear regression, dependent variable LN iFGF-23. Multivariate analysis including all factors with P < .10.

Table 3.

Correlates of iFGF-23 Levels

VariableUnivariate AnalysisMultivariate Analysis
βP ValueβP Value
Neonatal factors
    Gestational age (weeks)0.201.111
    Birth weight (kg)0.118.353
    Sex−0.072.573
    Length (cm)0.083.515
    Cord blood glucose (ng/ml)−0.138.283
    Cord blood C-peptide (ng/ml)0.290.0230.267.047
    Ln ferritin−0.195.129−0.175.180
    Lower first Apgar score−0.151.254
Maternal factors
    Multiparity−0.240.056−0.270.053
    Delivery method (vaginal vs cesarean)0.196.120
    Maternal age (y)0.189.139
    Black race−0.246.070−0.134.339
    Labor complication−0.024.848
VariableUnivariate AnalysisMultivariate Analysis
βP ValueβP Value
Neonatal factors
    Gestational age (weeks)0.201.111
    Birth weight (kg)0.118.353
    Sex−0.072.573
    Length (cm)0.083.515
    Cord blood glucose (ng/ml)−0.138.283
    Cord blood C-peptide (ng/ml)0.290.0230.267.047
    Ln ferritin−0.195.129−0.175.180
    Lower first Apgar score−0.151.254
Maternal factors
    Multiparity−0.240.056−0.270.053
    Delivery method (vaginal vs cesarean)0.196.120
    Maternal age (y)0.189.139
    Black race−0.246.070−0.134.339
    Labor complication−0.024.848

Analysis with linear regression, dependent variable LN iFGF-23. Multivariate analysis including all factors with P < .10.

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