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[A case - control study on risk factors for hip fracture in the middle - aged and elderly in Beijing]
1Department of Epidemiology, School of Public Helth, Beijing Medical University, Beijing 100083, China.
Insights
Hip fracture risk factors in older adults include low calcium intake, sedentary lifestyle, and family history. These risk factors for hip fracture differ between men and women.
Area of Science:
- Gerontology
- Orthopedics
- Epidemiology
Context:
- Hip fractures are a significant health concern for individuals aged 50 and older.
- Identifying modifiable and non-modifiable risk factors is crucial for prevention strategies.
Purpose:
- To investigate the diverse risk factors associated with hip fractures in both women and men aged 50 years and above.
- To analyze sex-specific differences in hip fracture risk factors.
Summary:
- A matched case-control study in Beijing identified multiple risk factors for hip fracture.
- Key risk factors include low dietary calcium, sedentary behavior, low BMI, lack of calcium supplements, previous fractures, family history, and diabetes.
- Sex-specific factors identified were age of menopause and breastfeeding duration in women, and body height in men.
Impact:
- Findings highlight the multifactorial nature of hip fractures.
- Results can inform targeted prevention programs and clinical interventions.
- Understanding sex-specific risks allows for tailored healthcare recommendations.
Objective:
To investigate the risk factors for hip fracture in women and men aged 50 years and older.
Methods:
A matched case - control study was carried out in the urban area of Beijing from Jan. 1994 to May 1996. A total number of 201 cases having had hip fracture were identified by X - ray films in four hospitals of Beijing. Four hundred and two neighbourhood controls were individually matched with these cases by age and sex. Data were analyzed by statistical technique of Chi-square test and conditional logistic regression.
Results:
In a multiple conditional logistic regression model, low dietary calcium intake, previous history of more sedantary position, lack of calcium supplement, low body mass index, current low physical exercise, never living in rural, sedentary position at work, previous fractures of any type after the age of 50, history of family hip fracture and diabetes mellitus were significantly associated with increased risk of hip fracture. In addition, hip fracture was related to the age of menopause and duration of breastfeeding in women, as well as body height in men.
Conclusion:
Hip fracture is a disease with multiple risk factors which are different with sex.