Length of Stay and Cost in Patients Undergoing Orthognathic Surgery: Does Surgeon Volume Matter?

ABSTRACT

PURPOSE: The relations among procedure-specific annual surgeon volume, hospital length of stay (LOS), and hospital costs for patients undergoing the 2 most common orthognathic surgical (OGS) procedures, segmental osteoplasty or osteotomy of the maxilla (SOM) or open osteoplasty or osteotomy of the mandibular ramus (SOMR), are not known. The authors hypothesized that treatment by high-volume surgeons would be associated with decreased LOS and costs. MATERIALS AND METHODS: All patients 8 to 64 years old who underwent elective SOM or SOMR were selected from the 2001 to 2009 Nationwide Inpatient Sample. Patients with missing vital status or payment mode status or who underwent more than 1 OGS procedure during the index hospitalization were excluded. Based on year- and procedure-specific annual surgeon volumes, the highest (highest quartile) and lowest (lowest quartile) procedure volume surgeon groups were compared. Multivariable logistic regression was used to study the relation between surgeon volume and extended patient LOS (defined as LOS ≥ 75th percentile). Generalized linear models with a log-link and gamma distribution were used to examine the association between surgeon volume and hospital costs. Models were adjusted for patient- and hospital-level factors and type of procedure (SOM or SOMR). Analysis was weighted to represent national-level estimates and an α value of 0.05 was used for all comparisons. RESULTS: After weighting to the population level, 8,062 patients were included for study. Most were white (80.6%), female (61.4%), and privately insured (84.6%). Mean age was 26 years (standard deviation, 0.38 yr). After adjusting for potential confounders, patients treated by high-volume surgeons showed 40% lower odds of extended LOS (odds ratio = 0.60; 95% confidence interval [CI], 0.38-0.95; P = .032) and incurred substantially lower costs (-$1,484.74; 95% CI, -2,782.76 to -185.58; P = .025) compared with patients treated by low-volume surgeons. CONCLUSION: These findings suggest that regionalization of patients to high-volume surgeons for OGS procedures could decrease LOS and incurred costs.