Page 156 - The value of total hip and knee arthroplasties for patients

Chapter 8
Table 1. Characteristics of patients < 65 years of age undergoing THA and TKA participating in a prospective cohort study
Variable
Sex, Female; no (%)
Age (years, mean (SD))
Age, categories, N (%) 18-45
46-55
56-65
Body Mass Index; mean (SD)
BMI, categories, N (%)
Normal 18.5-24.5 Overweight 25-29.9 Obese 30+
Education level, n (%)
Low Medium High
Living status
Living Independently, n (%)
HOOS or KOOS; mean (SD)
ADL
Pain
Quality of life Spor t Symptoms
EQ5D score; mean (SD)
EQ5D VAS scale; mean (SD)
Oxford Knee/Hip Score; mean (SD)
SF36 MCS; mean (SD) SF36 PCS; mean (SD)
THA Patients employed (N=71)
34 (48%) 56 (6.6)
8 (11%) 17 (24%) 46 (65%)
27.8 (6.0)
20 (30%) 32 (48%) 10 (15%) 5 (7%)
28 (40%) 19 (27%) 23 (33%)
71 (100%)
42 (17.5) 39 (20.3) 33 (9.1) 16 (17.6) 32 (18.9)
0.5 (0.3)
62 (18.7)
23 (7.0)
51 (10.5) 40 (6.8)
THA Patients not working (unemployed/ looking for a job, disability pension, retired, volunteer work) (N=51)
36 (71%) 60 (5.0)
2 (4%)
5 (10%) 44 (86%)
26.8 (4.2)
13 (29%) 19 (42%) 12 (27%) 1 (2%)
30 (60%) 7 (14%) 14 (28%)
51 (100%)
45 (19.0) 43 (17.1) 35 (8.8) 20 (15.8) 36 (17.7)
0.6 (0.3)
63 (20.2)
26 (6.9)
49 (11.8) 41 (8.4)
P value
0.012* 0.000*
0.739
0.098
0.437 0.174 0.261 0.087 0.172
0.858
0.600
0.048*
0.863 0.571
TKA Patients employed (N=64)
34 (53%) 56.2 (5.8)
4 (6%) 17 (27%) 42 (67%)
29.9 (4.5)
6 (10%) 22 (37%) 23 (39%) 8 (14%)
33 (52%) 12 (19%) 19 (30%)
63 (100%)
43.8 (16.1) 35.4 (14.8) 30.3 (9.2) 8.3 (10.6) 42.9 (14.5)
0.5 (0.3)
64.7 (18.3)
24.0 (6.9)
53.2 (9.8) 38.5 (7.4)
TKA Patients not working (unemployed/ looking for a job, disabil- ity pension, retired, vol- unteerwork) (N=56)
45 (80%) 58.8 (5.7)
4 (7%)
6 (11%) 46 (82%)
30.5 (5.1)
5 (10%) 22 (43%) 16 (31%) 8 (16%)
42 (75%) 9 (16%) 5 (9%)
55 (100%)
46.3 (16.1) 36.0 (12.9) 33.9 (8.7) 9.9 (12.4) 41.6 (14.2)
0.6 (0.3)
72.1 (18.1)
23.3 (5.8)
50.5 (13.0) 40.8 (6.3)
P value
0.002* 0.002*
0.690
0.010*
0.481 0.917 0.055 0.529 0.441
0.097
0.030*
0.655
0.084 0.381
HOOS Hip Disability and Osteoarthritis Outcome Score, KOOS Knee Injury and Osteoarthritis Outcome Score, ADL Activities limitations—Daily Living, EQ-5D EuroQol-5 Dimension, EQVAS EuroQol visual analogue scale, SF-36 MCS Short Form 36 Mental Component Summary Scale, SF-36 PCS Short Form 36 Physical Component Summary Scale
* Comparison of working and non-working patients at preoperative assessment by means of Mann- Whitney U or Chi Square tests where appropriate. *Significance level < 0.05.
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