Table 4.

Multilevel models predicting daily pain intensity from mean and within-person variation in symptoms

	Unadjusted Analysis						Adjusted Analysis
	β	SE	df	t	p		β	SE	df	t	p
Fixed Effects
Level 2 (Between-Subjects)
Mn Pain Unpleasantness	.90	.02	245	45.95	<.001		.87	.03	255	32.71	<.001
Mn Fatigue	.60	.04	256	14.12	<.001		.08	.03	257	2.86	<.01
Mn Depressed Mood	.38	.04	256	8.58	<.001		.02	.03	277	.62	.54
Mn Anxiety	.33	.05	256	7.34	<.001		−.06	.03	278	−2.15	.03
Level 1 (Within-Subjects)
Time	−.16	.06	109	−2.86	<.01		−.06	.02	44	−2.83	<.01
C_Pain Unpleasantness	.77	.01	214	53.40	<.001		.73	.02	236	47.69	<.001
C_Fatigue	.39	.02	215	18.00	<.001		.05	.01	201	4.06	<.001
C_Depressed Mood	.40	.03	151	14.39	<.001		.05	.01	96	4.53	<.001
C_Anxiety	.27	.03	159	9.89	<.001		.00	.01	87	.05	.96
Time × C_Pain Unpleasantness	−.00	.00	3856	−3.12	<.01		−.00	.00	3411	−1.57	.12
Time × C_Fatigue	−.00	.00	3492	−1.34	.18		−.00	.00	2574	−.72	.48
Time × C_Depressed Mood	−.00	.00	2186	−2.20	.03		−.00	.00	156	−.70	.49
Time × C_Anxiety	−.00	.00	1205	−1.29	.20		.00	.00	42	.98	.33
		β	SE	Z	p			β	SE	Z	p
Random Effects
Residual								37.95	.95	40.06	<.001
Intercept Variance								372.08	33.34	11.16	<.001
Slope Variance								.03	.01	2.31	.02
C_Pain Unpleasantness		.03	.00	6.68	<.001			.03	.00	6.39	<.001
C_Fatigue		.06	.01	6.44	<.001			.02	.00	4.84	<.001
C_Depressed Mood		.09	.02	5.39	<.001			.00	.00	1.49	.14
C_Anxiety		.08	.02	5.45	<.001			.00	.00	.61	.54

Note: Mn=Mean; C=Centered.