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Table 2 Association of patient expectations individually with change in HRQoL at 12 months by general linear models (N = 892)

From: A prospective study of the association of patient expectations with changes in health-related quality of life outcomes, following total joint replacement

Expectations

Change in WOMAC

Change in SF-12

 

Pain

Stiffness

Function

PCS

MCS

 

β

p value

β

p value

β

p value

β

p value

β

p value

Pain Relief

          

Low

Ref.

—

Ref.

—

Ref.

—

Ref.

—

Ref.

—

High

11.29

<0.001

9.41

0.012

9.10

0.001

6.30

0.001

4.51

0.066

Very high

14.43

<0.001

15.64

<0.001

12.10

<0.001

9.46

<0.001

4.584

0.049

Daily activities

          

Low

Ref.

—

Ref.

—

Ref.

—

Ref.

—

Ref.

—

High

5.47

0.012

6.96

0.015

5.13

0.017

3.82

0.008

0.35

0.849

Very high

8.11

<0.001

10.95

<0.001

7.37

0.001

7.79

<0.001

0.10

0.957

Ability to walk

          

Low

Ref.

—

Ref.

—

Ref.

—

Ref.

—

Ref.

—

High

3.41

0.235

4.21

0.267

4.28

0.129

4.53

0.017

1.58

0.515

Very high

10.90

<0.001

13.87

<0.001

11.01

<0.001

9.50

<0.001

4.08

0.084

Interact with others

          

Low

Ref.

—

Ref.

—

Ref.

—

Ref.

—

Ref.

—

High

4.02

0.050

1.21

0.651

3.88

0.055

3.29

0.013

2.62

0.116

Very high

5.31

0.012

8.82

0.001

6.74

0.001

6.20

<0.001

0.58

0.726

Psychological well-being

          

Low

Ref.

—

Ref.

—

Ref.

—

Ref.

—

Ref.

—

High

2.97

0.176

0.55

0.848

1.75

0.419

3.68

0.011

0.70

0.701

Very high

8.39

<0.001

10.17

0.001

8.33

<0.001

6.67

<0.001

3.09

0.093

  1. Ref: reference group.
  2. This general linear models have been adjusted for the corresponding HRQoL baseline scores.
  3. WOMAC, Westen Ontario and McMaster Universities Osteoarthritis Index; SF-12, Short Form 12; PCS, physical component summary of the SF-12; MCS, mental component summary of the SF-12.
  4. Changes are calculated so that a positive value indicates improvement and a negative value, worsening in all questionnaires.
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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