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Table 1 Baseline characteristics, including clinical characteristics, individual and neighbourhood SES, and outcomes

From: Comparison of individual and neighbourhood socioeconomic status in case mix adjustment of hospital performance in primary total hip replacement in Sweden: a register-based study

Variable Mean/Proportion Std deviation
Clinical characteristics
 Age 69.3 10.1
 Sex, proportion men 43%  
 Comorbidity - Elixhauser index score 1.3 1.3
 EQ-5D, at surgery 0.26 0.32
 Pain, at surgery 2.5 0.8
 Bilateral surgery 1%  
 Previous hip prosthesis 9%  
Individual socioeconomic characteristics
 Income per year, Swedish krona 242,593 157,396
 Born in Sweden 86%  
 Highest educational level: high 25%  
 Highest educational level: medium 41%  
 Highest educational level: low 33%  
Neighbourhood socioeconomic characteristics
 Income per year, Swedish krona 258,834 65,990
 Born in Sweden 86%  
 Highest educational level: high 35%  
 Highest educational level: medium 44%  
 Highest educational level: low 20%  
Outcome variables
 Length of stay, orthopaedic unit, at surgery 4.0 2.8
 EQ-5D, one-year follow-up 0.63 0.40
 Pain, one-year follow-up 0.6 0.9