Table 1

Univariate and multiple linear regression of fatigue and pain interference on self-efficacy

Factor	Fatigue				Pain interference
Factor	Slope* (±SE) (per 1-point ↑)	Slope (per 5-point ↑)	P value	MSE	Slope* (±SE) (per 1-point ↑)	Slope (per 5-point ↑)	P value	MSE
Univariate
Symptom self-efficacy	−0.556±0.044	−2.781	<0.001	97.4	−0.394±0.042	−1.971	<0.001	87.4
Treatment self-efficacy	−0.282±0.044	−1.411	<0.001	113.4	−0.152±0.041	−0.760	<0.001	96.7
Multiple†
Symptom self-efficacy	−0.241±0.043	−1.204	<0.001	66.9	−0.103±0.040	−0.537	0.008	59.9
Treatment self-efficacy	−0.072±0.038	−0.360	0.055	70.0	0.025±0.035	0.127	0.47	60.6

*Indicates b regression coefficient.
†Adjusted for age, disease duration, education, work status, insurance, depression, disease activity (SLAQ) and organ damage (SA-BILD).
MSE, mean square error; SA-BILD, Self-Administered Brief Index of Lupus Damage; SLAQ, Systemic Lupus Activity Questionnaire.