Table 3.

Hierarchical regression analyses predicting pain at T1 and T2.

Predictor	Pain at T1^a	Pain at T2^b	Pain at T2^c
Step 1 Disease-related variables
R²	0.12	0.29^**	0.40^***
Pain at T1 (B)			0.51^***
CHAQ (B)	0.19	0.17	−0.02
Disease activity (B)	−0.02	0.31^*	−0.18
Step 2 Cognitive beliefs (B)	0.38^*	0.31^*	0.31^*
R² change	0.12^*	0.09^*	0.07^*
Cumulative R²	0.23^d	0.37^c	0.47^f

↵a Disease-related variables and cognitive beliefs at T1 predicting pain at T1.
↵b Disease-related variables and cognitive beliefs at T2 predicting pain at T2.
↵c Disease-related variables (including pain at T1) and cognitive beliefs at T1 predicting pain at T2.
↵d F (3–43) = 4.37, p < 0.01.
e F (3–43) = 8.32, p < 0.0005.
↵f F (4–42) = 9.42, p < 0.0005.
↵* p < 0.05;
↵** p < 0.001;
↵*** p < 0.0005. B: Standardized betas for the model. T1: study entry; T2: 2-year followup; CHAQ: Childhood Health Assessment Questionnaire.