Table 3:

Effects of risk factors by BMI categories.

	BMI category
	(<30.0)	(30.0 - 45.0)	(> 45.0)
Pain severity	+*	+*	+*
Fibromyalgia score	+*	+*	+*
Tobacco use	+*	+*	+*
ASA >= 3	+*	+*	0
Illicit drug use	+*	+*	+*
Apnea	0	0	0
Alcohol	0	0	+*
Anxiety	0	0	0
Depression	+*	+*	+
Sex (male)	+	+*	+*
Age	0	0	0
Race (black)	+*	0	0
Life satisfaction	− *	− *	0
Charlson comorbidity	0	0	0

Note: 0: no effects; +/−: positive/negative

^*:significant