Table 2.
Change in Health-Related Quality of Life, health status and psychological distress
| 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 |
‡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)
*Number of participants with complete baseline and preadmission data for each measure; does not total 134 due to missing data
#Negative change score indicates deterioration for AQoL; positive change score indicates deterioration for WOMAC and K10
†Negative effect size indicates deterioration
**Paired t-test