Table VI.

Multivariate analysis of 2-yr SSQ-8 scores.

Variable	Estimate	Standard error	t Ratio	P value	Adjusted R2
Preoperative PROMIS PI	−0.44	0.18	−2.33	.019	0.15
Income <$70,000	−5.47	1.39	−3.92	<.001
ASA score >1	−3.77	1.52	−2.48	.015
CPT 24372	4.17	1.79	2.33	.021

SSQ-8, Surgical Satisfaction Questionnaire; PROMIS PI, Patient-Reported Outcomes Measurement Information System, Pain Interference; ASA, American Society of Anesthesiologists; CPT, Common Procedural Terminology; ASES, American Shoulder and Elbow Surgeons.

Bold values indicate statistical significance (P < .05).

A backward stepwise multivariable regression was performed using Bayesian information criteria to identify predictors of satisfaction scores. Negative values for the estimate and t Ratio indicate that the variable reduces satisfaction, while positive values indicate that the variable increases satisfaction. The final model accounted for 15% of the variance in satisfaction scores among the study cohort. The following variables were included in the model a priori: age, gender, race, ethnicity, and worker’s compensation status. The following variables were included in the model a posteriori: body mass index, education, income, smoking, recreational drug use, preoperative opioid use, ASA score, number of comorbidities, living with a caretaker, as well as preoperative PROMIS, physical function; PROMIS, pain interference; PROMIS, fatigue; PROMIS, social satisfaction; PROMIS, anxiety; PROMIS, depression; ASES score; NPS, Shoulder; NPS, Body, Tegner Activity Scale, preop expectations; and CPT, 29827, CPT, 23472, CPT, 29806, CPT, 29825, CPT, 29823, CPT, 29807, CPT, 23462, CPT, 23515, CPT, 29826, CPT, 29828.