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Logistic Regression Modeling for the Length of Stay Among the Hospitalized Patients After the 2010 Yushu Earthquake

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Modeling the Injury Flow and Treatment after Major Earthquakes

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Abstract

Objectives: The aim was to identify factors that influence length of stay (LOS) among patients with earthquake-related injury and then to offer insights with respect to future directions for effective health policies and measures to reduce LOS.

Methods: This was a retrospective cohort study. Forty-nine rear hospitals spanning five provinces in China were included in the present study. Medical records of 2086 adult patients who were transported from the 2010 Yushu earthquake area and admitted for earthquake-related injury from April 14 to May 15, 2010, were collected.

Results: A total of 2086 patients with earthquake-related injury were included in this study, with a mean (SD) age of 40.0 (14.6) years. For comparative purposes, a longer LOS was defined as a hospital stay of over 25 days (n = 775; 37.2 %), which represents the mean LOS value for all patients. Multivariate regression models show that being elderly (odds ratio [OR], 1.43; 95 % confidence interval [CI], 1.01–2.02), female (OR, 1.24; 95 % CI, 1.02–1.52), arriving earlier at the hospital (OR, 0.67; 95 % CI, 0.59–0.76), bone fracture (OR, 1.82; 95 % CI, 1.43–2.32), abdominal injury (OR, 1.62; 95 % CI, 1.20–2.17), injury to the extremities/pelvis injury (OR, 1.80; 95 % CI, 1.41–2.28), higher injury severity score (OR, 2.30; 95 % CI, 1.64–3.23), having undergone surgery (OR, 2.50; 95 % CI, 2.02–3.09), and having developed complications (OR, 1.74; 95 % CI, 1.20–2.54) were significantly and independently associated with longer LOS.

Conclusions: Strong preventive and therapeutic initiatives should be designed for elderly and female patients injured in earthquakes, especially within the initial days. Surgery was the greatest risk for a longer LOS. More attention should be paid to patients with fracture, trauma to the abdomen or extremities/pelvis, complications, or higher injury severity score. The factors identified in this study offer insights into directions for effective health policy to reduce LOS after a devastating earthquake.

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Authors and Affiliations

  1. Faculty of Health Service, Institute of Military Health Management, Second Military Medical University of the Chinese People’s Liberation Army, 800 Xiangyin Road, Shanghai, People’s Republic of China

    Peng Kang PhD

  2. Department of Military Health Service, College of Military Health Service, Second Military Medical University, Shanghai, China

    Lulu Zhang PhD

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  1. Peng Kang PhD
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Correspondence to Lulu Zhang PhD .

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  1. Department of Military Health Service, College of Military Health Service, Shanghai, China

    Lulu Zhang

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Kang, P., Zhang, L. (2016). Logistic Regression Modeling for the Length of Stay Among the Hospitalized Patients After the 2010 Yushu Earthquake. In: Zhang, L. (eds) Modeling the Injury Flow and Treatment after Major Earthquakes. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-7527-4_3

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  • DOI: https://doi.org/10.1007/978-94-017-7527-4_3

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