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Table 2 Change in Health-Related Quality of Life, health status and psychological distress

From: Decline in Health-Related Quality of Life reported by more than half of those waiting for joint replacement surgery: a prospective cohort study

  

Baseline

Preadmission

Change

Effect size†

p**

Construct‡

n*

Mean

SD

Mean

SD

Mean#

95% CI

  

Health-Related Quality of Life (AQoL)

         

   Overall sample

127

0.42

0.22

0.37

0.25

-0.04

-0.08 to -0.01

-0.19

0.02

Total hip replacement

63

0.42

0.23

0.36

0.24

-0.06

-0.11 to -0.02

-0.27

0.01

Total knee replacement

64

0.41

0.22

0.39

0.26

-0.02

-0.08 to 0.03

-0.10

0.39

Health status (WOMAC)

         

   Overall sample

119

59.7

18.6

61.3

18.0

1.5

-1.1 to 4.2

-0.08

0.26

Total hip replacement

61

60.5

20.5

62.1

18.6

1.7

-1.9 to 5.2

-0.08

0.35

Total knee replacement

58

59.0

16.5

60.3

17.4

1.4

-2.7 to 5.4

-0.08

0.50

Psychological distress (K10)

         

   Overall sample

132

20.2

7.7

20.7

8.0

0.5

-0.4 to 1.4

-0.07

0.25

Total hip replacement

65

19.7

7.9

20.2

8.0

0.5

-0.9 to 1.9

-0.06

0.50

Total knee replacement

67

20.7

7.6

21.3

8.0

0.5

-0.6 to 1.7

-0.07

0.33

  1. ‡AQoL range: -0.04 (worst HRQoL) to 1.00 (full HRQoL); WOMAC range: 0 (best health state) to 100 (worst health state); K10 range: 10 (lowest psychological distress) to 50 (highest psychological distress)
  2. *Number of participants with complete baseline and preadmission data for each measure; does not total 134 due to missing data
  3. #Negative change score indicates deterioration for AQoL; positive change score indicates deterioration for WOMAC and K10
  4. †Negative effect size indicates deterioration
  5. ** Paired t-test