KAPLAN-MEIER SURVIVAL ANALYSIS OF PATIENTS WITH DISPLACED AND NON-DISPLACED FEMORAL NECK FRACTURE OVER 60
Author(s)
Imre Boncz, MD, MSc, department head1, Andor Sebestyén, MD, MBA, deputy director1, András Oláh, BSc, MSc, senior lecturer2, József Betlehem, BSc, MSc, PhD, vice-dean2, József Nyárády, MD, PhD, department head21National Health Insurance Fund Administration, Budapest, Hungary; 2 University of Pécs, Pécs, Hungary
OBJECTIVES: The purpose of this study was to analyze the 5-year survival rate after medial femoral neck fracture according to type of fracture (displaced or non-displaced) over 60. METHODS: Data derive from the financial database of the Hungarian National Health Insurance Fund Administration, based on the 10th revision of the International Classification of Diseases (ICD) with ICD code S7200 and on the Hungarian Diagnosis Related Group (DRG) system. The following patients were included into the study: having social insurance identification number, being discharged in 2000 after primary treatment of femoral neck fracture. The patients with polytrauma were excluded from the study. Statistical analysis was carried out with SPSS 14.0 for Windows. We created Kaplan-Meier survival curves (at 2170 days) and calculated chi-square values (Mantel-Cox log rank test). RESULTS: Altogether N=3346 consecutive patients from the whole country were included into the study (mean age=77.90 ± 8.458). A total of 2558 patients (mean age=78.14 ± 8.410) had displaced while 788 patients (mean age=77.14 ± 8.571) had non-displaced medial femoral neck fracture. One-way analysis of variance (ANOVA) showed significant difference in the mean age of the two groups of patients (F=8.412, P=0.004). Overall survival at 5 years follow up was 33.97 % for patients with displaced and 42.26 % for patients with non-displaced medial femoral neck fracture. Statistical analysis showed that type of fracture had a highly significant effect on mortality (log rank test 18.17, df=1, p<0.001). CONCLUSION: We found significant difference in survival of patients depending on the type of medial femoral neck fracture (displaced or non-displaced). Although survival is influenced by significant difference in the mean age of the two groups of patients, the type of fracture is important regarding survival.
Conference/Value in Health Info
2007-05, ISPOR 2007, Arlington, VA, USA
Value in Health, Vol. 10, No.3 (May/June 2007)
Code
POI2
Topic
Clinical Outcomes
Topic Subcategory
Relating Intermediate to Long-term Outcomes
Disease
Musculoskeletal Disorders