Copyright
©The Author(s) 2018.
World J Orthop. Oct 18, 2018; 9(10): 220-228
Published online Oct 18, 2018. doi: 10.5312/wjo.v9.i10.220
Published online Oct 18, 2018. doi: 10.5312/wjo.v9.i10.220
Table 2 Significance of ethnicity n (%)
| Majority ethnicity | Minority ethnicity | P value (adjusted) | ||
| Baseline characteristics | ||||
| BMI (mean ± SD) | 29.7 ± 5 | 29.9 ± 4 | 0.702 (3.508) | |
| Age (mean ± SD) | 67.0 ± 10 | 64.0 ± 9 | 0.009 (0.045) | |
| Gender | ||||
| Male | 294 (37.36) | 11 (15.22) | < 0.001 (0.004) | |
| Female | 470 (62.64) | 54 (84.78) | ||
| Smoking | ||||
| Non-smoker | 430 (56.3) | 55 (84.6) | < 0.001 (< 0.001) | |
| Former smoker | 207 (27.1) | 4 (6.5) | ||
| Active smoker | 127 (16.6) | 6 (9.2) | ||
| Duration of education | ||||
| More than 12 yr | 248 (32.5) | 7 (10.8) | < 0.001 (< 0.001) | |
| 9-12 yr | 369 (47.1) | 11 (16.9) | ||
| 0-9 yr | 156 (20.4) | 47 (72.3) | ||
| Preoperative level of function and symptoms | ||||
| Walking aid outside the home: | ||||
| None | 556 (72.8) | 34 (52.3) | 0.005 (0.026) | |
| One cane | 111 (14.9) | 20 (30.8) | ||
| Two canes | 30 (3.9) | 3 (4.6) | ||
| Wheeled walker | 61 (8) | 8 (12.3) | ||
| Do not leave the home | 6 (0.8) | 0 (0) | ||
| Oxford knee score (mean ± SD) | 23.9 ± 7 | 18.6 ± 8 | < 0.001 (< 0.001) | |
| Knee pain during activity1, median (range) | 61.0 (0:100) | 76 (13:100) | < 0.001 (< 0.001) | |
| Quality of life before surgery1, median (range) | 47.0 (0:100) | 38 (0:100) | 0.388 (1.938) | |
| Level of symptoms before surgery1, median (range) | 50.0 (0:100) | 61 (0:100) | 0.276 (1.380) | |
| Preoperative expectations | ||||
| Expectations to knee pain caused by use of hip 1 yr after surgery1, median (range) | 2.0 (0:100) | 4 (0:99) | 0.005 (0.016) | |
| Expectations to quality of life 1 yr after surgery1, median (range) | 94.0 (0:100) | 92 (0:100) | 0.296 (0.888) | |
| Expectations to level of symptoms 1 yr after surgery1, median (range) | 3.0 (0:99) | 6 (0:99) | 0.005 (0.016) | |
| Postoperative level of function and symptoms: | ||||
| Oxford knee score, median (range) | 39.0 (3.0:48.0) | 24.0 (10.0:47.0) | < 0.001 (0.002) | |
| Knee pain during act1, median (range) | 18.0 (0.0:100.0) | 62.0 (5.0:90.0) | < 0.001 (< 0.001) | |
| Quality of life1, median (range) | 71.5 (0.0:100.0) | 40.0 (0.0:95.0) | < 0.001 (0.001) | |
| Level of symptoms1, median (range) | 21.0 (0.0:100.0) | 62.0 (10.0:90.0) | < 0.001 (0.001) | |
| Difference in outcome parameters: | ||||
| Difference in Pain1, median (range) | 13.0 (90.0:100.0) | 47.0 (37.0:90.0) | 0.008 (0.0499) | |
| Difference in Quality of life after surgery1, median (range) | 15.0 (100.0:98.0) | 44.0 (99.0:38.0) | 0.013 (0.078) | |
| Difference in level of symptoms1, median (range) | 17 (56.0:100.0) | 46.0 (36.0:88.0) | 0.299 (1.796) | |
- Citation: Kudibal MT, Kallemose T, Troelsen A, Husted H, Gromov K. Does ethnicity and education influence preoperative disability and expectations in patients undergoing total knee arthroplasty? World J Orthop 2018; 9(10): 220-228
- URL: https://www.wjgnet.com/2218-5836/full/v9/i10/220.htm
- DOI: https://dx.doi.org/10.5312/wjo.v9.i10.220