Table 1 Subject characteristics
THA | TKA | P | |
|---|---|---|---|
(n = 20) | (n = 29) | ||
Baseline | |||
Age (years) | 69.5 (8.8) | 67.4 (8.3) | 0.41 |
Gender (% female) | 65 % | 65.5 % | 0.97* |
Weight (kg) | 79.4 (19.2) | 83.8 (19.2) | 0.43 |
Height (m) | 1.64 (0.11) | 1.63 (0.11) | 0.76 |
BMI (kg m−2) | 29.2 (4.9) | 31.5 (6.3) | 0.16 |
Length of stay (days) | 6.0 (1.8) | 7.1 (5.6) | 0.31 |
PCS | 28.9 (5.8) | 31.7 (8.4) | 0.18 |
MCS | 39.2 (13.6) | 45.1 (12.8) | 0.13 |
Co-morbidities (%) | |||
Cardiovascular disease | 65 | 55 | 0.58* |
Diabetes mellitus | 20 | 21 | 0.98* |
Respiratory | 15 | 10 | 0.61* |
Musculoskeletal | 35 | 34 | 0.87* |
Average number of comorbidities | 2.9 (2.1) | 2.4 (1.5) | 0.35 |
Follow-up | |||
BMI (kg m−2) | 28.6 (5.0) | 30.5 (6.4) | 0.25 |
Weight (kg) | 77.5 (19.2) | 81.0 (18.9) | 0.54 |
Change | |||
BMI (kg m−2) | −0.68 (1.08) | −1.07 (1.80) | 0.35 |
Weight (kg) | −1.84 (2.95) | −2.86 (4.82) | 0.36 |
Weight (%) | −2.4 (4.0) | −3.3 (5.7) | 0.51 |
Weight loss | |||
Number of people who lost weight n (%) | 14 (70) | 17 (58.6) | 0.42* |
BMI reduction (kg m−2) | −1.1 (0.2) | −2.2 (0.4) | 0.02 |
Weight (kg) | −3.09 (2.57) | −5.93 (3.92) | 0.02 |
Weight (%) | −4.1 (3.4) | −6.9 (4.7) | 0.06 |
>5 % body weight reduction, n, (%) | 5 (25) | 11 (37.9) | 0.34* |
Weight gain | |||
Number of people who gained weight n (%) | 4 (20) | 10 (34.5) | 0.27* |
BMI increase (kg m−2) | 0.6 (0.3) | 0.7 (0.3) | 0.48 |
Weight (kg) | 1.7 (0.8) | 1.8 (1.1) | 0.66 |
Weight (%) | 2.4 (1.5) | 2.3 (1.6) | 0.37 |
>5 % body weight gain, n, (%) | 0 (0) | 1 (10) | 0.51* |