Table 2.

Length of Stay and Postoperative Opioid Consumption between Patients Categorized as Reporting a Low (0–4), Moderate (5–8), or High (9–31) Score on the American College of Rheumatology Survey for Fibromyalgia

	Low	Moderate	High	p value (overall regression)	p value (Low = Moderate)	p value (Low = High)	p value (Moderate = High)
Duration of postoperative admission (days)	2.89 (0.95)^	2.99 (0.89)^	3.14 (0.983)^	0.127	0.496	0.1266	0.496
PACU Opioid Consumption (OMEs)	18.3 (22.8)	21.2 (25.4)^	38.3 (59.9)^	0.0092	0.995	0.023	0.015
Total Post-operative Opioid Consumption (OMEs)	175 (129)^	221 (188)^	381 (515)^	<0.00001	0.30	<0.00001	0.00007

Patients in the High group had a significantly longer inpatient course when compared with patients in the Low group. Postoperative opioid consumption was higher in patients in the higher tertiles for the fibromyalgia scale.

Data presented as mean (standard deviation). Skewed data marked by ^ as determined by the Agostino test at 5% significance level. Medians and interquartile ranges for skewed variables are presented in the table labeled Supplemental Digital Content 2. Statistics and p-values are regression model-based with fibromyalgia tertile group as a categorical covariate, and pain at surgical site and overall pain as continuous covariates. Model is linear regression. First p-value represents the overall regression result, and the individual between group comparisons are noted in the p-values to follow, adjusted for multicomparisons (Holm method).

OME = oral morphine equivalents; PACU = postanesthesia care unit.