Introduction
Methods
HOOS
HOOS Item nr | HOOS 2.0 | Mean Relevance | SRM | WOMAC item, nr | KOOS Item, nr |
---|---|---|---|---|---|
Pain
| |||||
P1 | How often do you experience hip pain? | 2.6 | 1.7 | P1 | |
P3 | Pain straightening hip fully? | 3.0 | 1.8 | P3 | |
P4 | Pain bending hip fully? | 2.3 | 1.8 | P4 | |
P5 | Walking on a flat surface? | 2.7 | 1.4 | P1 | P5 |
P6 | Going up or down stairs? | 2.0 | 1.6 | P2 | P6 |
P7 | At night while in bed? | 2.7 | 1.5 | P3 | P7 |
P8 | Sitting or lying? | 2.7 | 1.2 | P4 | P8 |
P9 | Standing upright? | 2.3 | 1.2 | P5 | P9 |
P11 | Walking on hard surface, ex. Asphalt, concrete? | 2.3 | 1.6 | * | |
P12 | Walking on uneven ground? | 3.0 | 1.5 | ||
Symptoms
| |||||
S2 | Do you feel grinding, hear clicking or any other type of noise when your hip moves? | 2.2 | 1.0 | S2 | |
S6 | Severity of stiffness after first wakening in the morning? | 2.5 | 1.1 | S1 | S6 |
S7 | Severity of stiffness after sitting/lying/resting later in the day? | 2.7 | 1.2 | S2 | S7 |
S10 | Difficulty spreading your legs? | 1.7 | 1.4 | * | |
S11 | Difficulty walking with long strides? | 2.3 | 1.3 | * | |
ADL
| |||||
A1 | Descending stairs? | 2.3 | 1.5 | A1 | A1 |
A2 | Ascending stairs? | 2.3 | 1.5 | A2 | A2 |
A3 | Rising from sitting? | 2.7 | 1.3 | A3 | A3 |
A4 | Standing? | 2.3 | 1.5 | A4 | A4 |
A5 | Bending to floor/pick up an object? | 2.3 | 1.2 | A5 | A5 |
A6 | Walking on flat surface? | 2.0 | 1.2 | A6 | A6 |
A7 | Getting in/out of car? | 2.7 | 1.5 | A7 | A7 |
A8 | Going shopping? | 2.0 | 1.3 | A8 | A8 |
A9 | Putting on socks/stockings? | 2.7 | 1.2 | A9 | A9 |
A10 | Rising from bed? | 2.3 | 1.1 | A10 | A10 |
A11 | Taking off socks/stockings? | 2.0 | 0.9 | A11 | A11 |
A12 | Lying in bed? | 2.0 | 1.3 | A12 | A12 |
A13 | Getting in/out of bath/shower? | 1.3 | 0.9 | A13 | A13 |
A14 | Sitting? | 1.7 | 1.1 | A14 | A14 |
A15 | Getting on/off toilet? | 1.7 | 1.3 | A15 | A15 |
A16 | With heavy domestic duties? | 2.3 | 1.2 | A16 | A16 |
A17 | With light domestic duties? | 2.0 | 1.0 | A17 | A17 |
Sport/Recreation
| |||||
SP1 | Difficulty squatting? | 2.7 | 1.0 | SP1 | |
SP2 | Difficulty running? | 3.0 | 0.8 | SP2 | |
SP4 | Difficulty twisting/pivoting on loaded leg? | 2.7 | 1.5 | SP4 | |
SP6 | Difficulty walking on uneven ground? | 2.3 | 1.1 | * | |
Hip Related QOL
| |||||
Q1 | How often are you aware of your hip problems? | 3.0 | 1.3 | Q1 | |
Q2 | Have you modified your lifestyle to avoid potentially damaging activities to your hip? | 3.0 | 1.0 | Q2 | |
Q3 | How much are you troubled with lack of confidence in your hip? | 2.7 | 1.3 | Q3 | |
Q4 | In general, how much difficulty do you have with your hip? | 2.7 | 1.7 | Q4 |
Items not included | Mean Relevance | SRM | KOOS Item nr | |
---|---|---|---|---|
Pain
| ||||
P2 | Pain twisting/pivoting on loaded leg? | 2.5 | 1.0 | P2 |
P10 | Sharp twinges in your hip? | 2.3 | 1.6 | * |
Other Symptoms
| ||||
S1 | Do you have swelling in your hip? | 0.4 | 0.5 | S1 |
S3 | Does your hip catch or hang up when moving? | 0.8 | 0.7 | S3 |
S4 | Can you straighten your hip fully? | 2.3 | 0.8 | S4 |
S5 | Can you bend your hip fully? | 2.4 | 0.9 | S5 |
S8 | Have you experienced weakness in your leg? | 2.6 | 0.9 | |
ADL
| ||||
A19 | Cutting toenails? | 2.3 | 0.8 | * |
Sport/Recreation
| ||||
SP3 | Difficulty jumping? | 2.3 | 0.7 | SP3 |
SP5 | Difficulty kneeling? | 2.3 | 1.1 | SP5 |
Hip related QOL
| ||||
Q5 | Can you cope with your hip problems? | 2.3 | 1.6 | * |
SF-36
Study design and statistics
Subjects
Content validity
Dimensionality
Construct validity
Responsiveness
Statistics
Results
Missing data
Item selection
Validity
Content validity
Score distributions
HOOS subscale | Preop | Postop |
---|---|---|
Pain | 35.6 (14.4) | 82.3 (18.3) |
Symptoms | 34.3 (16.9) | 73.9 (16.7) |
ADL | 37.8 (15.9) | 75.5 (17.9) |
Sport/Recreation | 17.15 (13.8) | 56.3 (26.2) |
QOL | 21.4 (13.6) | 66.2 (23.2) |
Construct validity
SF-36 subscale | HOOS Pain | HOOS Symptoms | HOOS ADL | HOOS Sport/Rec | HOOS QOL |
---|---|---|---|---|---|
PF
|
0.52
|
0.35
|
0.66
|
0.49
|
0.46
|
RP | 0.17 | 0.03 | 0.24 | 0.12 | 0.24 |
BP
|
0.61
|
0.38
|
0.62
|
0.44
|
0.56
|
GH | 0.13 | 0.09 | 0.17 | 0.13 | 0.19 |
VT | 0.38 | 0.25 | 0.48 | 0.35 | 0.49 |
SF | 0.42 | 0.17 | 0.48 | 0.26 | 0.37 |
RE | 0.18 | 0.04 | 0.27 | 0.01 | 0.05 |
MH | 0.29 | 0.17 | 0.37 | 0.24 | 0.26 |
Responsiveness
Dimension | SRM All patients (n = 62) | SRM ≤ 66 years (n = 17) | SRM >66 years (n = 47) |
---|---|---|---|
HOOS pain | 2.11 | 2.60 | 1.97 |
WOMAC pain | 1.83 | 2.37 | 1.68 |
HOOS symptoms | 1.83 | 3.05 | 1.60 |
WOMAC stiffness | 1.28 | 2.15 | 1.09 |
HOOS ADL | 1.70 | 2.51 | 1.52 |
HOOS sport/rec | 1.29 | 1.53 | 1.21 |
WOMAC function | 1.70 | 2.51 | 1.52 |
HOOS QOL | 1.64 |