Table 2.
Differences in main comparisons.
| Good sleepers | Poor sleepers | t test | |
|---|---|---|---|
| Age (years) (mean ± SD) | 70.47 ± 15.8 | 64.27 ± 11.47 | t(161) = −2.9, p = 0.004 |
| Gender (M/F) (n) | 45/19 | 54/45 | χ 2 = 4.05, p = 0.044 |
| Surgical procedure (TKA/THA) (n) | 35/29 | 39/60 | χ2 = 3.7, p = 0.055 |
| Preoperative pain intensity (0–10) (mean ± SD) | 2.76 ± 2.11 | 4.06 ± 2.29 | t(161) = 3.62, p < 0.001 |
| PCS (0–52) (mean ± SD) | 12.39 ± 8.85 | 21.29 ± 12.89 | t(160.38) = 5.22, p < 0.001 |
| HADS (Anxiety; 0–21) (mean ± SD) | 2.39 ± 2.26 | 4.97 ± 3.57 | t(160.96) = 5.64, p < 0.001 |
| HADS (Depression; 0–21) (mean ± SD) | 1.28 ± 1.67 | 2.98 ± 2.92 | t(158.79) = 4.71, p < 0.001 |
TKA: total knee arthroplasty, THA: total hip arthroplasty; PCS: Pain Catastrophizing Scale, PSQI: Pittsburgh Sleep Quality Index, HADS: Hospital Anxiety and Depression Scale.
Good sleepers were significantly older, were represented by less women, and had lower preoperative pain, lower PCS, lower depression, and lower anxiety than the poor sleepers.Boldfaced values represent significant findings (P < 0.05).