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Table 1 Demographic case-mix variables according to group

From: Early functional outcomes after condylar-stabilizing (deep-dish) versus standard bearing surface for cruciate-retaining total knee arthroplasty

Case-mix variable CS (n = 54) CR (n = 364) p value
Age (years), mean (SD) 68.5 (9.4) 68.8 (8.6) 0.81*
Gender, n (% of group) Male 12 (22.2) 164 (45.1) 0.002**
Female 42 (77.8) 200 (54.9)
BMI (kg/m2), mean (SD) 31.5 (8.1) 31.1 (5.6) 0.68*
Comorbidity, n (% of group)
 Diabetes Yes 8 (14.0) 41 (11.0) 0.45**
No 46 (86.0) 323 (89.0)
 Rheumatoid arthritis Yes 10 (18.5) 52 (14.3) 0.41**
No 44 (81.5) 312 (85.7)
 Back pain Yes 25 156 0.63**
No 29 208  
 Depression Yes 10 49 0.32**
No 44 315  
 Ischaemic heart disease Yes 5 (9.3) 46 (12.6) 0.5**
No 49 (90.7) 318 (87.4)
 Hypertension Yes 25 (46.3) 182 (50.0) 0.8**
No 29 (53.7) 182 (50.0)
  1. *t test
  2. **Chi-square test
  3. Bold numbers represent p-values of less than 0.1
  4. BMI body mass index, CR cruciate retaining, CS condylar stabilizing, SD standard deviation