Table 2. Questionnaire Scores and Differences among Participants Based on Educational Status.
| Score | Educational status | p-value | ||
|---|---|---|---|---|
| Illiterate (n = 14) | Primary school (n = 24) | High school or higher (n = 14) | ||
| Mean age (yr) | 70.29 ± 9.06 | 65.79 ± 6.97 | 66.50 ± 7.00 | 0.206 |
| Range of motion (°) | 120.36 ± 9.89 | 124.38 ± 7.98 | 125 ± 5.55 | 0.240 |
| OHI score | 33.86 ± 7.05 | 36.12 ± 11.58 | 50.79 ± 10.64* | < 0.001* |
| Lie score | 56.50 ± 17.86 | 52.25 ± 19.19 | 56.50 ± 17.59 | 0.711 |
| Extroversion score | 59.07 ± 19.63 | 46.96 ± 21.46 | 52.57 ± 22.11 | 0.241 |
| Neuroticism score | 68.07 ± 22.5 | 70.79 ± 24.92 | 67.93 ± 30.31 | 0.928 |
| SF-12 score | ||||
| Preoperative | 27.36 ± 4.75 | 25.08 ± 5.26 | 28.71 ± 5.33 | 0.104 |
| Postoperative | 35.36 ± 5.75 | 32.63 ± 6.81 | 41.36 ± 4.99* | < 0.001* |
| Improvement | 8.00 ± 3.66 | 7.54 ± 2.67 | 12.64 ± 2.59* | < 0.001* |
| KOOS score | ||||
| Preoperative | 34.93 ± 3.32 | 32.63 ± 7.63 | 32.79 ± 5.34 | 0.510 |
| Postoperative | 65.29 ± 6.91 | 65.75 ± 11.42 | 75.50 ± 4.69* | 0.004* |
| Improvement | 30.36 ± 6.44 | 33.12 ± 10.56 | 42.71 ± 7.69* | 0.001* |
Values are presented as mean ± standard deviation.
OHI: Oxford Happiness Inventory, SF-12: 12-item short form health survey, KOOS: Knee Injury and Osteoarthritis Outcome Score.
*Significant (2-tailed) at the 0.05 level.