Table 3. Open in new tab Results of...

Model	Goodness of Fit Test	Model Fit Comparison
Full model
ACE estimates were different in the groups of term, preterm, and very preterm and were different in boys and girls	18 962.907	7593
Constraining A, C, or E to be equal in the groups both for boys and girls
As FM but A equal across groups	18 977.181	7597	1	14.274	4	.006
As FM but C equal across groups	18 976.014	7597	1	13.108	4	.011
As FM but E equal across groups	18 980.002	7597	1	17.096	4	.002
Constraining A, C, or E to be equal in the groups only in boys
As FM but A equal across groups	18 967.675	7595	1	4.769	2	.092
As FM but C equal across groups	18 963.823	7595	1	0.916	2	.633
As FM but E equal across groups	18 967.202	7595	1	4.295	2	.117
Constraining A, C, or E to be equal in the groups only in girls
As FM but A equal across groups	18 970.795	7595	1	7.889	2	.019
As FM but C equal across groups	18 974.697	7595	1	11.791	2	.003
As FM but E equal across groups	18 975.499	7595	1	12.593	2	.002

Model

Goodness of Fit Test

Model Fit Comparison

χ²

Versus Model

Δχ²

Δdf

Full model

ACE estimates were different in the groups of term, preterm, and very preterm and were different in boys and girls

18 962.907

7593

Constraining A, C, or E to be equal in the groups both for boys and girls

As FM but A equal across groups

18 977.181

7597

14.274

.006

As FM but C equal across groups

18 976.014

7597

13.108

.011

As FM but E equal across groups

18 980.002

7597

17.096

.002

Constraining A, C, or E to be equal in the groups only in boys

As FM but A equal across groups

18 967.675

7595

4.769

.092

As FM but C equal across groups

18 963.823

7595

0.916

.633

As FM but E equal across groups

18 967.202

7595

4.295

.117

Constraining A, C, or E to be equal in the groups only in girls

As FM but A equal across groups

18 970.795

7595

7.889

.019

As FM but C equal across groups

18 974.697

7595

11.791

.003

As FM but E equal across groups

18 975.499

7595

12.593

.002

Model	Goodness of Fit Test	Model Fit Comparison
Full model
ACE estimates were different in the groups of term, preterm, and very preterm and were different in boys and girls	18 962.907	7593
Constraining A, C, or E to be equal in the groups both for boys and girls
As FM but A equal across groups	18 977.181	7597	1	14.274	4	.006
As FM but C equal across groups	18 976.014	7597	1	13.108	4	.011
As FM but E equal across groups	18 980.002	7597	1	17.096	4	.002
Constraining A, C, or E to be equal in the groups only in boys
As FM but A equal across groups	18 967.675	7595	1	4.769	2	.092
As FM but C equal across groups	18 963.823	7595	1	0.916	2	.633
As FM but E equal across groups	18 967.202	7595	1	4.295	2	.117
Constraining A, C, or E to be equal in the groups only in girls
As FM but A equal across groups	18 970.795	7595	1	7.889	2	.019
As FM but C equal across groups	18 974.697	7595	1	11.791	2	.003
As FM but E equal across groups	18 975.499	7595	1	12.593	2	.002

Table 3.

Open in new tab

Results of Model Fitting for Standardized T₄ Scores in a Multigroup Analysis

Model	Goodness of Fit Test		Model Fit Comparison
Model	χ²	df	Versus Model	Δχ²	Δdf	P
Full model
ACE estimates were different in the groups of term, preterm, and very preterm and were different in boys and girls	18 962.907	7593
Constraining A, C, or E to be equal in the groups both for boys and girls
As FM but A equal across groups	18 977.181	7597	1	14.274	4	.006
As FM but C equal across groups	18 976.014	7597	1	13.108	4	.011
As FM but E equal across groups	18 980.002	7597	1	17.096	4	.002
Constraining A, C, or E to be equal in the groups only in boys
As FM but A equal across groups	18 967.675	7595	1	4.769	2	.092
As FM but C equal across groups	18 963.823	7595	1	0.916	2	.633
As FM but E equal across groups	18 967.202	7595	1	4.295	2	.117
Constraining A, C, or E to be equal in the groups only in girls
As FM but A equal across groups	18 970.795	7595	1	7.889	2	.019
As FM but C equal across groups	18 974.697	7595	1	11.791	2	.003
As FM but E equal across groups	18 975.499	7595	1	12.593	2	.002

Model	Goodness of Fit Test		Model Fit Comparison
Model	χ²	df	Versus Model	Δχ²	Δdf	P
Full model
ACE estimates were different in the groups of term, preterm, and very preterm and were different in boys and girls	18 962.907	7593
Constraining A, C, or E to be equal in the groups both for boys and girls
As FM but A equal across groups	18 977.181	7597	1	14.274	4	.006
As FM but C equal across groups	18 976.014	7597	1	13.108	4	.011
As FM but E equal across groups	18 980.002	7597	1	17.096	4	.002
Constraining A, C, or E to be equal in the groups only in boys
As FM but A equal across groups	18 967.675	7595	1	4.769	2	.092
As FM but C equal across groups	18 963.823	7595	1	0.916	2	.633
As FM but E equal across groups	18 967.202	7595	1	4.295	2	.117
Constraining A, C, or E to be equal in the groups only in girls
As FM but A equal across groups	18 970.795	7595	1	7.889	2	.019
As FM but C equal across groups	18 974.697	7595	1	11.791	2	.003
As FM but E equal across groups	18 975.499	7595	1	12.593	2	.002

Abbreviations: A, additive genetic factors; C, shared environmental factors; E, unique environmental factors.

ACE estimates were allowed to be different in the 3 groups of full term, preterm, and very preterm infants.

This Feature Is Available To Subscribers Only