Risk factors of survival after surgery in elderly patients with hip fracture
Date Issued
2012
Date
2012
Author(s)
Wu, Chia-Yen
Abstract
Hip fracture is one of major factor leading to morbidity and mortality in the elders. It causes negative impacts on older people’s lives and also costs enormous medical expenses. Previous studies has shown that older adults with hip fracture have a relatively higher risk of death. Currently, surgery is the primary treatment for hip fracture but there are several factors to influence post-surgery survival rate. In this study, we aim to explore some risk factors which could be used to predict the survival outcome in patients with hip fractures after surgery treatment.
This study used secondary analysis, the original data was collected from Apil 2004 to January 2006. The inclusion criteria were noninstitutionalized patients with age ≧ 60 years old and who had first low-trauma hip fractures treated by surgery in Taipei’s medical center was eligible. In this study, 217 patients were recuited and data analysis was combined with death of statistical data from Bureau of health promotion, department of health in Taiwan. Survival rate of post-surgery was analyzed by using Kaplan- Meier method. To analyize the influence factors of survival rate, Log-Rank test was performed for each variable. Cox proportional hazard models were used to calculate the hazard ratios (HRs) of the factors with regard to mortality.
Our data showed that hip fracture more commonly occurs in elder women with age over 80 years old. One-year survival rate of post-surgery was 87.6% in all subjects. For gender comparison, one-year and 4.8-year survival rate of post- surgery were all significant lower in men than those in women. From multivariate Cox regression analysis, we found that predictors for one-year survival rate of post-surgery were male, illiterate and body mass index (BMI) less than 20. For 4.8-year survival rate of post- surgery, there was five predictors which included male, illiterate, BMI≦20, T score of bone density≦-2.16 and ADLs difficult. In addition, we also noted that education and MMSE both reveal significant associations with one-year and 4.8-year survival rate, but no significant association with death-risk post-surgery.
Subjects
elders with hip fracture
survival rate
risk factor
Type
thesis
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