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Table 3 Multivariate Cox regression analysis for evaluating the influence of Regional dissection on survival of patients with primary metastatic osteosarcoma in SEER database

From: A population-based propensity-matched study of regional dissections in patients with metastatic osteosarcoma

CharacteristicsOSCSS
HR (95% CI)PHR (95% CI)P
Treatment    
 Non-regional dissectionReference Reference 
 Regional dissection0.47 (0.35-0.64)<0.0010.46 (0.34-0.63)<0.001
Age    
 <18Reference Reference 
 18-651.79 (1.36-2.36)<0.0011.77 (1.32-2.36)<0.001
 >=652.39 (1.40-4.06)0.0012.54 (1.48-4.36)0.001
Grade    
 Well/moderateReference Reference 
 Poorly/undifferentiated0.86 (0.44-1.65)0.6440.80 (0.41-1.54)0.496
 Unknown0.80 (0.41-1.59)0.5310.76 (0.38-1.50)0.423
Chemotherapy    
 No/unknownReference Reference 
 Yes0.98 (0.57-1.67)0.9390.93 (0.54-1.59)0.779
Radiation    
 No/unknownReference Reference 
 Yes1.25 (0.88-1.78)0.2101.22 (0.85-1.76)0.285
Location    
 ExtremityReference Reference 
 Other1.28 (0.90-1.83)0.1661.24 (0.86-1.79)0.253
  1. Abbreviation: SEER=Surveillance, Epidemiology and End Results; OS=Overall survival; CSS=Cause-specific survival
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X