Univariate analysis of comparing reoperation versus no-reoperation within 12 months following revision ankle replacement surgery
| 12 months following revision ankle replacement | |||
|---|---|---|---|
| Reoperation | No-reoperation | ||
| Age | n (proportion) | n (proportion) | OR (95% CI, p value) |
| <65 | 2 (0.29) | 34 (0.5) | Ref |
| 65–74 | 4 (0.57) | 19 (0.28) | 3.5 (0.4 to 40, p=0.2) |
| >75 | 1 (0.14) | 15 (0.22) | 1.1 (0.01 to 22, p=0.1) |
| Length of stay | mean (range) | mean (range) | |
| 3.6 (1-6) | 4.3 (1–12) | p=0.78 | |
| BMI | n (proportion) | n (proportion) | OR (95% CI, p value) |
| Underweight | 1 (0.25) | 0 (0) | – |
| Normal | 1 (0.25) | 5 (0.14) | Ref |
| Overweight | 2 (0.5) | 30 (0.86) | 0.3 (0.02 to 24, p=0.41) |
| Missing=36 | |||
| Gender/F | 43% | 44% | |
| Operation | n (proportion) | n (proportion) | OR (95% CI, p value) |
| Uncemented TAR | 2 (0.5) | 38 (0.78) | Ref |
| Hybrid | 1 (0.25) | 9 (0.18) | 2.1 (0.3 to 44, p=0.5) |
| TTC nail | 1 (0.25) | 2 (0.04) | 9.5 (0.1 to 250, p=0.2) |
| Missing=22 | |||
| ASA | n (proportion) | n (proportion) | OR (95% CI, p value) |
| 1–2 | 2 (0.29) | 14 (0.21) | Ref |
| 3–4 | 5 (0.71) | 54 (0.79) | 0.7 (0.1 to 11, p=0.64) |
| Charlson | n (proportion) | n (proportion) | |
| 0 | 7 (1.0) | 67 (0.98) | |
| 1 | 0 (0) | 1 (0.02) | |
| 2 | 0 (0) | 0 (0) | |
ASA, American Society of Anesthesiologists; BMI, body mass index; CI, confidence interval; F, female; n, number of patients NHS, national health service; OR, odds ratio; Ref, reference value; SD, standard deviation; TTC, Tibio-Talar-Calcaneal.