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. 2022 Nov 9;58:101174. doi: 10.1016/j.dcn.2022.101174

Table 5.

Multilevel Models of Maternal Sleep Quality Across Gestation & Amygdala Volume.

Model 1 – Right Amygdala
AmyR AmyR & Covariates
Fixed Effects Intercept Centered at 8 Gestational Weeks’ (b0) 6.81 6.86
AmyR (b01) -0.01 -0.02
ICV (b02) -0.000002
Postconceptional Age (b03) 0.27⸸
BWP (b04) 0.003
Sex (b05) -0.57
Linear Slope (b1) -0.11 -0.11
AmyR (b11) 0.001 0.001
Quadratic Growth (b2) 0.005 * * 0.005 * *
AmyR (b21) -0.00003 -0.00003
Random Effectsa Error (σ2e) 2.41 2.42
Intercept (σ2b0) 12.49 * ** 12.37 * **
Slope (σ2b1) 0.01 * ** 0.01 * **
Model 2 – Left Amygdala
AmyL AmyL & Covariates
Fixed Effects Intercept Centered at 8 Gestational Weeks’ (b0) 6.79 6.83
AmyL (b01) -0.01 -0.02
ICV(b02) -0.000002
Postconceptional Age (b03) 0.29 *
BWP (b04) 0.005
Sex (b05) -0.58
Linear Slope (b1) -0.10 -0.10
AmyL (b11) -0.0005 -0.0005
Quadratic Growth (b2) 0.005 * * 0.005 * *
AmyL (b21) 0.00001 0.00001
Random Effectsa Error (σ2e) 2.39 2.40
Intercept (σ2b0) 12.52 * ** 12.29 * **
Slope (σ2b1) 0.01 * ** 0.01 * **

Note:p < .08, *p < .05, * *< .01, * **p < .001. AmyR = Right amygdala, AmyL= Left amygdala, ICV = Intracranial volume, BWP = Birth weight percentile. a Intercept and linear slope were tested as random parameters, whereas quadratic growth was tested as a fixed parameter.