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Table 1 Baseline sociodemographic, pain, function and co-morbidity characteristics of patients

From: The role of patient expectations in predicting outcome after total knee arthroplasty

Variable Baseline value
Demographic/physical variables  
   Gender (n) 78 women, 34 men
   Age (years) 67 ± 9
   Body weight (kg) 87.5 ± 15 (men), 76.6 ± 15.5 (women)
   Job status (%)  
Full time 14
Part time 9
Retired/unemployed/homemaker 77
   Marital status (%)  
Married 61
Widowed 20
Divorced/separated 12
Never married 7
   Living conditions (%)  
Alone 29
With partner 65
With family 6
Pain, function and co-morbidity variables  
   Affected knee (%)  
Left 46
Right 48
Both within 3 months 6
   Pain duration (%)  
< 6 months 1
6 to 12 months 9
1 to 3 years 23
3 to 5 years 14
> 5 years 53
   Pain intensity (%) (n = 110)  
None 1
Slight 3
Moderate 30
Severe 66
   When is the pain bothersome? (%)  
Have no pain 1
First few steps only 6
After long walks (> 30 minutes) 10
Whenever walk 43
Constantly, even at rest 40
   Knee limits ability to do sports (%)  
No limitation 0
Slightly limits me 0
Moderately limits me 6
Greatly limits me 28
Totally limits me 30
Do not participate in sport for reasons unrelated to my knee 35
   Knee limits/interferes with sexual activity (%)  
No limitation 24
Slightly limits me 11
Moderately limits me 16
Greatly limits me 8
Totally limits me 1
Not sexually active for reasons unrelated to my knee 40
   Knee limits ability to work (%)  
No limitation 8
Slightly limits me 13
Moderately limits me 22
Greatly limits me 21
Totally limits me 6
Not working for reasons unrelated to my knee 30
   Other painful joints (back, hip, foot) (%) 65
   American Association of Anaesthesiologists co-morbidity grade (%)  
Grade I 17
Grade II 51
Grade III 32
  1. Data presented as n, mean ± standard deviation, or percentage.