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Table 1 Demographic characteristics of patients used in this study

From: Comparison of the therapeutic effect between the simultaneous and staged unicompartmental knee arthroplasty (UKA) for bilateral knee medial compartment arthritis

ItemGroup A (n = 39)Group B (n = 54)t/χ2P Value
Age (years)64.9 ± 7.764.2 ± 6.40.4920.624
Gender (male/female)6:335:490.3330.564
Weight (kg)62.8 ± 4.361.9 ± 4.80.9550.342
Height (cm)162.6 ± 6.4162.5 ± 6.50.0570.955
BMI (kg/m2)23.9 ± 2.523.5 ± 2.60.5830.561
ASA class2.1 ± 0.52.1 ± 0.50.0120.990
Comorbidity(n, %)14 (35.9%)26 (48.1%)1.3870.239
 Hypertension711  
 CAOD34  
 Arrhythmia01  
 Pulmonary disease12  
 Diabetes mellitus37  
 CKD00  
 CVA01  
  1. Abbreviations: BMI body mass index, ASA American Society of Anesthesiologists, CAOD coronary artery obstructive disease, CKD chronic kidney disease, CVA cerebral vascular accident, KS knee society score