Table 4A.

Multivariate logistic regression^*. Any adverse event.

Variables	OR	95% CI	p
SLE vs OA	3.77	1.74–8.16	0.0008
Charlson-Deyo Comorbidity Index^**, ≥ 1 vs 0	1.69	0.76–3.76	0.20
Epidural block vs no	1.29	0.35–4.73	0.71

↵* All models control for disease (SLE vs OA), comorbidities, and type of anesthesia.
↵** The Charlson-Deyo Comorbidity Index was calculated by excluding SLE. Significant data are in bold face. SLE: systemic lupus erythematosus; OA: osteoarthritis.