Table 2.

Model Fitting Results for Tests of Linear and Quadratic Age Moderation on Means and Variance Components.

Model	−2LL	df	AIC	LRT	Δdf	p
Self-rated health
1. No moderation	89,177.75	12,044	65,089.75	—	—	—
2. Model 1 + Linear Means   Moderation	89,158.16	12,042	65,074.16	19.59	2	.0001
3. Model 2 + Quadratic   Means Moderation	89,143.56	12,040	65,063.56	14.60	2	.0007
4. Model 3 + Linear   Variance Component   Moderation	89,131.95	12,034	65,063.95	11.61	6	.0713
5. Model 4 + Quadratic   Variance Component   Moderation	89,118.11	12,028	65,062.11	13.84	6	.0314
Extent to which health limits activities
1. No moderation	94,069.24	12,710	68,649.24	—	—	—
2. Model 1 + Linear Means   Moderation	94,046.76	12,708	68,630.76	22.48	2	<.0001
3. Model 2 + Quadratic   Means Moderation	94,032.01	12,706	68,620.01	14.75	2	.0006
4. Model 3 + Linear   Variance Component   Moderation	93,983.60	12,700	68,583.60	48.41	6	<.0001
5. Model 4 + Quadratic   Variance Component   Moderation	93,935.89	12,694	68,547.89	47.71	6	<.0001
Health compared to others
1. No moderation	94,209.79	12,681	68,847.79	—	—	—
2. Model 1 + Linear Means   Moderation	94,197.59	12,679	68,839.59	12.20	2	.0022
3. Model 2 + Quadratic   Means Moderation	94,196.19	12,677	68,842.19	1.40	2	.4966
4. Model 2 + Linear   Variance Component   Moderation	94,178.79	12,673	68,832.79	17.40	6	.0079
5. Model 4 + Quadratic   Variance Component   Moderation	94,172.19	12,667	68,838.19	6.60	6	.3594

Note. Best-fitting variance component moderation model for each measure is bolded. LL = log-likelihood; AIC = Akaike information criterion; LRT = Likelihood ratio chi-square test; Δdf = change in degrees of freedom between the model in question and the comparison model; p = significance of LRT.