Table 3.

Linear Mixed Model of Log-Transformed Oxytocin (OT) Trajectories.

Parameter	Coefficient	p > z	95% CI
Log plasma OT (pg/ml)
Corrected gestational age	−0.15	<.01	[−0.25, −0.04]
Intercept	4.72	<.01	[4.15, 5.29]
Random-effects parameters	Estimate
σb 0i (random intercepts)	0.18		[0.09, 0.35]
σb 1i (random slopes)	0.98		[0.53, 1.84]
$\widehat{\rho }$ (correlation of random effects)	−0.99		[−1.00, 0.22]
σε it (residual)	0.56		[0.46, 0.68]
Log urine OT (pg/ml/ng creatinine)	Coefficient	p > z
Corrected gestational age	0.04	.58	[−0.10, 0.18]
Intercept	8.44	<.01	[7.67, 9.21]
Random-effects parameters	Estimate
σb 0i (random intercepts)	1.24		[0.56, 2.76]
σb 1i (random slopes)	0.23		[0.11, 0.49]
$\widehat{\rho }$ (correlation of random effects)	−0.91		[−0.99, −0.49]
σε it (residual)	0.96		[0.82, 1.14]

Note. CI = confidence interval.