Table 4.

Associations Between Infant Apgar Scores and Plasma Oxytocin (OT) Levels.

Parameter	Coefficient	p > z	95% CI
Log plasma OT (pg/ml)
Corrected gestational age (weeks)	0.20	.15	[−0.07, 0.47]
Apgar score at 5 min	0.28	.02	[0.05, 0.52]
Apgar × CGA	−0.06	.01	[−0.10, −0.01]
Intercept	3.01	<0.01	[1.56, 4.47]
Random-effects parameters	Estimate
σb 0i (random intercepts)	0.87		[0.07, 0.32]
σb 1i (random slopes)	0.15		[0.44, 1.71]
ρ^ (correlation of random effects)	−0.99		[−1.00, 0.75]
σεit (residual)	0.56		[0.46, 0.68]

Note. Corrected gestational age, the time-indicating variable for the study, is centered at 27 weeks. CGA = corrected gestational age.