2022 年 5 巻 3 号 p. 16-23
Background: As the population ages, the number of patients with osteoarthritis also rises. Patients with end-stage osteoarthritis often undergo surgery, including total joint replacement, in the hospital. In those cases, the length of hospital stay is problematic for both patients and hospitals. This study aimed to determine the factors that influenced the length of stay in older patients with osteoarthritis treated at our hospital.
Methods: We performed a retrospective chart review. The study included 253 patients with osteoarthritis aged ≥65 years who underwent surgery and were admitted to our hospital between January 2017 and December 2019. A total of 247 patients were included in the final analysis. The objective variable was length of stay. Factors with a p value <0.05 in the univariate analysis were further analyzed via multiple regression analysis to determine independent risk factors for prolongation of length of stay. Multivariate analysis of factors associated with length of stay was performed, adjusting for confounding factors.
Results: Of 42 variables analyzed by univariate analysis, 22 were significantly correlated. Furthermore, the results of the multiple regression analysis showed that length of stay was significantly associated with the use of psychotropics. Users of psychotropics had a significantly longer length of stay than nonusers did.
Conclusions: Psychotropics are negatively associated with the length of stay in older patients with osteoarthritis.
