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Table 1 The 40 HOOS items arranged in the five subscales Pain, Symptoms, Activities of Daily Living, Sport and Recreation Function and Hip Related Quality of Life. The corresponding WOMAC item numbers and KOOS item numbers are declared as well as SRM (standardized response mean) and mean relevance of each question. * these items were constructed by one of the authors (MK)

From: Hip disability and osteoarthritis outcome score (HOOS) – validity and responsiveness in total hip replacement

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