Regression Analysis: Age and Sex Effects on EOHI-DGEN and EHI Domain

EOHI-DGEN Models

1. Age Model (age_DGEN)

Model Results, AIC, and VIF

**Age Model: EOHI-DGEN**

	Dependent variable:

	EOHI-DGEN Mean

Age (centered)	-0.015
	(0.003)
	p = 0.00002^***

Constant	0.417
	(0.053)
	p = 0.000^***


AIC	4174.08
Max VIF	N/A
Observations	1,061
R²	0.018
Adjusted R²	0.017
Residual Std. Error	1.727 (df = 1059)
F Statistic	19.407^*** (df = 1; 1059)

Note:	^p<0.1; ^p<0.05; ^**p<0.01

Assumption Diagnostic Plots

Model Visualization

2. Sex Model (sex_DGEN)

Model Results, AIC, and VIF

**Sex Model: EOHI-DGEN**

	Dependent variable:

	EOHI-DGEN Mean

Sex (dummy)	0.099
	(0.107)
	p = 0.355

Constant	0.367
	(0.076)
	p = 0.00001^***


AIC	4192.48
Max VIF	N/A
Observations	1,061
R²	0.001
Adjusted R²	-0.0001
Residual Std. Error	1.742 (df = 1059)
F Statistic	0.859 (df = 1; 1059)

Note:	^p<0.1; ^p<0.05; ^**p<0.01

Assumption Diagnostic Plots

3. Interaction Model (interaction_DGEN)

Model Results, AIC, and VIF

**Interaction Model: EOHI-DGEN**

	Dependent variable:

	EOHI-DGEN Mean

Age (centered)	-0.018
	(0.005)
	p = 0.0004^***

Sex (dummy)	0.103
	(0.106)
	p = 0.331

Age x Sex	0.006
	(0.007)
	p = 0.402

Constant	0.364
	(0.075)
	p = 0.00001^***


AIC	4176.42
Max VIF	2.22
Observations	1,061
R²	0.020
Adjusted R²	0.017
Residual Std. Error	1.727 (df = 1057)
F Statistic	7.017^*** (df = 3; 1057)

Note:	^p<0.1; ^p<0.05; ^**p<0.01

Assumption Diagnostic Plots

EHI Domain Models

1. Age Model (age_domain)

Model Results, AIC, and VIF

**Age Model: EHI Domain**

	Dependent variable:

	EHI Domain Mean

Age (centered)	-0.007
	(0.001)
	p = 0.000^***

Constant	0.137
	(0.015)
	p = 0.000^***


AIC	1515.75
Max VIF	N/A
Observations	1,061
R²	0.044
Adjusted R²	0.043
Residual Std. Error	0.493 (df = 1059)
F Statistic	49.178^*** (df = 1; 1059)

Note:	^p<0.1; ^p<0.05; ^**p<0.01

Assumption Diagnostic Plots

Model Visualization

2. Sex Model (sex_domain)

Model Results, AIC, and VIF

**Sex Model: EHI Domain**

	Dependent variable:

	EHI Domain Mean

Sex (dummy)	0.031
	(0.031)
	p = 0.311

Constant	0.121
	(0.022)
	p = 0.00000^***


AIC	1562.88
Max VIF	N/A
Observations	1,061
R²	0.001
Adjusted R²	0.00003
Residual Std. Error	0.504 (df = 1059)
F Statistic	1.029 (df = 1; 1059)

Note:	^p<0.1; ^p<0.05; ^**p<0.01

Assumption Diagnostic Plots

3. Interaction Model (interaction_domain)

Model Results, AIC, and VIF

**Interaction Model: EHI Domain**

	Dependent variable:

	EHI Domain Mean

Age (centered)	-0.006
	(0.001)
	p = 0.00001^***

Sex (dummy)	0.033
	(0.030)
	p = 0.274

Age x Sex	-0.0003
	(0.002)
	p = 0.883

Constant	0.120
	(0.021)
	p = 0.00000^***


AIC	1518.52
Max VIF	2.22
Observations	1,061
R²	0.045
Adjusted R²	0.043
Residual Std. Error	0.494 (df = 1057)
F Statistic	16.789^*** (df = 3; 1057)

Note:	^p<0.1; ^p<0.05; ^**p<0.01

Assumption Diagnostic Plots