Comparison of mortality rate and septic and aseptic revisions in total hip arthroplasties for osteoarthritis and femoral neck fracture: an analysis of the German Arthroplasty Registry

Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 1 Anthropometry and risk factors after matching (1:1) of total hip arthroplasties for the treatment of primary osteoarthritis and femoral neck fracture

	Osteoarthritis (OA)	Intracapsular femoral neck fracture (FNF)	p-Value
Number (n)	21,718	21,718
Age (years)	74.8 ± 9.52	74.7 ± 9.81	p = 0.331
Sex (female) n (%)	15,206 (70.0)	15,186 (69.9)	p = 0.842
Elixhauser comorbidity score	5.08 ± 6.56	5.24 ± 6.79	p = 0.014
Body mass index (BMI) in kg/m²	25.5 ± 4.25	25.1 ± 4.35	p < 0.0001
Cementless fixation (%)	10,209 (47.0)	10,182 (46.9)	p = 0.803

BMI and Elixhauser score remain statistically significant after matching; however, balance is satisfactorily improved (standardized mean difference is below 0.05 and variance below 1.10 for both variables)