Structural equation model analysis of the length-of-hospital stay after lumbar spine surgery

被引:21
|
作者
Kanaan, Saddam F. [1 ]
Waitman, Lemuel R. [2 ]
Yeh, Hung-Wen [2 ]
Arnold, Paul M. [3 ]
Burton, Douglas C. [4 ]
Sharma, Neena K. [1 ]
机构
[1] Jordan Univ Sci & Technol, Dept Rehabil Sci, Irbid 22110, Jordan
[2] Univ Kansas, Med Ctr, Dept Biostat, Kansas City, KS 66160 USA
[3] Univ Kansas, Med Ctr, Dept Neurosurg, Kansas City, KS 66160 USA
[4] Univ Kansas, Med Ctr, Dept Orthoped Surg, Kansas City, KS 66160 USA
来源
SPINE JOURNAL | 2015年 / 15卷 / 04期
关键词
Lumbar surgery; Length-of-hospital stay; Functional assessment; Structural equation model; Predictors; Postsurgical; KNEE ARTHROPLASTY; PHYSICAL-THERAPY; INTERBODY FUSION; REHABILITATION; PREDICTORS; OUTCOMES; ASSOCIATION; DISKECTOMY; HEALTH; HIP;
D O I
10.1016/j.spinee.2014.11.001
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
BACKGROUND CONTEXT: Length-of-hospital stay (LOS) after lumbar spine surgery (LSS) can be affected by many factors. However, few studies have evaluated predictors of LOS, and all have used limited number of variables as predictors. PURPOSE: The purpose of the study was to identify presurgical, surgical, and postsurgical predictors of LOS after LSS. STUDY DESIGN/SETTING: Retrospective review of consecutive patients who had LSS at the University of Kansas Hospital from October 2008 to April, 2012. PATIENT SAMPLE: Five hundred ninety-three patients underwent LSS consisting of laminotomy, laminectomy, or arthrodesis. OUTCOME MEASURES: Dependent variable: LOS. Multiple presurgical, surgical, and postsurgical variables were extracted from the patients' medical records and considered as possible predictors (independent variables) of LOS. METHODS: Potential predictors that were significantly correlated with LOS were used as indicators to construct three latent factors presurgical, surgical, and postsurgical, which were in turn used to predict LOS in a structural equation model. RESULTS: The average LOS was 4.01 +/- 2.73 days. The presurgical factor was indicated by age (61.97 +/- 14.49 years), previous level of function (60.5% were totally independent), previous hemoglobin level (13.70 +/- 1.36 mg/dL), and use of assistive devices (60% were assistive device users). The surgical factor was indicated by severity of illness (50.2% had minor disease severity), presence of complications (1.9%), and stay in an intensive care unit (4.0%). The postsurgical factor was indicated by postsurgical walking distance (166.43 +/- 175.75 ft), level of assistance during walking (5.18 +/- 0.81 out of 7 points), balance scores (6.18 +/- 1.82 out of 10 points), and bed mobility and transfer dependency scores (9.81 +/- 1.99 out of 14 points). These three latent factors explained 47% of variation in LOS. CONCLUSIONS: Postsurgical factors predicted the highest variation in LOS in comparison with presurgical and surgical factors and should be taken into consideration for discharge planning. Postsurgical factors are related to the patient's function, modifiable with rehabilitation, and can be improved to shorten LOS. Inclusion of more reliable and standardized presurgical variables could improve the predictability of the model. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码:612 / 621
页数:10
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