Background
Methods
Study design and sample
Questionnaires
WOMAC
GSES
SPS
Statistical methods
Results
Sample characteristics
Responders | Nonresponders |
P-value | |
---|---|---|---|
N | 223 | 27 | |
Age (mean ± standard deviation) | 69.3 ± 9.8 | 69.1 ± 8.5 | 0.92 |
Female gender | 159 (71.3) | 20 (74.1) | 0.83 |
Marital status | 0.49 | ||
Married | 149 (66.8) | 17 (63.0) | |
Widowed | 38 (17.0) | 5 (18.5) | |
Divorced/separated | 25 (11.2) | 5 (18.5) | |
Single | 11 (5.0) | - | |
Living with someone | 156 (70.0) | 19 (70.4) | 1.0 |
Having children | 194 (92.8) | 27 (100) | 0.23 |
Educational level | 0.09 | ||
Primary school | 54 (24.4) | 13 (48.1) | |
Secondary school | 94 (42.5) | 10 (37.0) | |
University <4 years | 41 (18.6) | 2 (7.4) | |
University ≥4 years | 32 (14.5) | 2 (7.4) | |
Employment | 0.60 | ||
Retired | 144 (64.6) | 17 (63.0) | |
Full- or part-time work | 35 (15.7) | 2 (7.4) | |
Sick leave | 18 (8.1) | 3 (11.1) | |
Disability pension | 26 (11.6) | 5 (18.5) | |
Number of comorbidities | 0.11 | ||
1 | 91 (40.8) | 17 (63.0) | |
2 | 55 (24.7) | 4 (16.0) | |
3 | 29 (13) | 4 (16.0) | |
>3 | 10 (4.5) | – | |
Missing data | 38 (17) | 2 (7.4) |
Comparison of responders and nonresponders’ baseline WOMAC, SPS, and GSES scores
Short-term recovery following THR
Baseline mean (SD) | Quartiles 1st, 2nd, 3rd
| α | 3 months post-THR mean (SD) | Quartiles 1st, 2nd, 3rd
| α |
P-value | |
---|---|---|---|---|---|---|---|
N = 218 |
N = 218 | ||||||
WOMAC total | 57.7 (14.5) | 49, 58.3, 67.7 | 0.94 | 25.6 (16.1) | 13.5, 23.9, 34.4 | 0.96 | <0.001 |
Pain | 56.3 (17.5) | 45, 55, 69.7 | 0.78 | 16.8 (16.6) | 5, 10, 25 | 0.88 | <0.001 |
Stiffness | 60.8 (17.8) | 50, 62.5, 75 | 0.69 | 31.5 (17.2) | 25, 25, 43.8 | 0.74 | <0.001 |
Physical function | 57.6 (15.2) | 48.5, 58.8, 68.7 | 0.93 | 27.7 (17.3) | 14.7, 25, 38.2 | 0.95 | <0.001 |
N = 220 |
N = 219 | ||||||
SPS | 86.3 (8.2) | 82.6, 89, 92 | 0.85 | 86.1 (8.9) | 82, 88, 93 | 0.86 | 0.96 |
Guidance | 15.0 (2.0) | 15, 16, 16 | 0.79 | 14.9 (2.2) | 15, 16, 16 | 0.73 | 0.70 |
Reliable alliance | 15.2 (1.6) | 15, 16, 16 | 0.51 | 15.3 (1.7) | 16, 16, 16 | 0.67 | 0.28 |
Attachment | 14.9 (1.7) | 14, 16, 16 | 0.56 | 14.7 (1.9) | 14, 16, 16 | 0.62 | 0.22 |
Social integration | 14.4 (1.7) | 13, 15, 16 | 0.53 | 14.3 (1.8) | 14, 15, 16 | 0.61 | 0.67 |
Reassurance of worth | 14.6 (1.8) | 14, 15, 16 | 0.67 | 14.7 (1.7) | 14, 15, 16 | 0.69 | 0.28 |
Opportunity for nurturance | 12.3 (2.9) | 10, 13, 15 | 0.68 | 12.2 (3.1) | 10, 13, 15 | 0.72 | 0.41 |
N = 217 |
N = 216 | ||||||
GSES | 30.9 (5.2) | 28, 30, 34,7 | 0.92 | 31.6 (4.7) | 29, 31, 35 | 0.91 | 0.018 |
Change in social support and general self-efficacy
Prediction of short-term recovery after THR
Step 1. Univariate analysis
Predictors | WOMAC total score (0–100) | ||||||
---|---|---|---|---|---|---|---|
β | 95% CI | Std. Error |
P-value | R2
| N | ||
Lower | Upper | ||||||
Age | 0.26 | 0.05 | 0.45 | 0.11 | 0.02 | 0.03 | 218 |
Female gender | 4.56 | −0.13 | 9.25 | 2.38 | 0.06 | 0.02 | 218 |
Living alone | −3.86 | −8.60 | 0.89 | 2.41 | 0.11 | 0.01 | 218 |
Higher education | −5.30 | −9.85 | −0.74 | 2.31 | 0.02 | 0.02 | 218 |
Comorbidity | 2.79 | 0.47 | 5.10 | 1.17 | 0.02 | 0.03 | 180 |
Baseline WOMAC total (0–100) | 0.46 | 0.30 | 0.58 | 0.07 | <0.001 | 0.15 | 213 |
Self-efficacy (10–40) | −0.52 | −0.93 | −0.11 | 0.21 | 0.01 | 0.03 | 212 |
Social support (16–96) | −0.26 | −0.52 | −0.003 | 0.13 | 0.05 | 0.02 | 215 |
Reliable alliance (4–16) | −2.13 | −3.48 | −0.78 | 0.69 | 0.002 | 0.04 | 214 |
Social integration (4–16) | −1.26 | −2.54 | 0.02 | 0.65 | 0.05 | 0.02 | 212 |
Reassurance of worth (4–16) | −1.41 | −2.63 | −0.19 | 0.62 | 0.02 | 0.02 | 211 |
Steps 2 and 3: Multiple linear regression analysis
Predictors | WOMAC total score (0–100) | ||||
---|---|---|---|---|---|
β | 95% CI | Std. Error |
P-value | ||
Lower | Upper | ||||
Constant
| 7.66 | −24.81 | 40.13 | 16.45 | 0.64 |
Age | 0.35 | 0.13 | 0.57 | 0.21 | 0.002 |
Comorbidity | 2.12 | 0.06 | 4.19 | 1.05 | 0.04 |
Baseline WOMAC total (0–100) | 0.44 | 0.29 | 0.59 | 0.08 | <0.001 |
Self-efficacy (10–40) | −0.44 | −0.87 | −0.02 | 0.22 | 0.04 |
Social support | |||||
Reliable alliance (4–16) | −1.40 | −2.81 | 0.01 | 0.71 | 0.05 |