Table 1.
Patient characteristics
| Overall study Cohort (n = 124) Mean ± SD (range) |
Cohort with WOMAC and SF-36 data (n = 93) Mean ± SD (range) |
Cohort with SF-36 data only (n = 31) Mean ± SD (range) |
|
|---|---|---|---|
| Age at index surgery, years | 71.7 ± 6.9 (58.6–89.2) | 72.6 ± 7.4 (59.8–89.2) | 69.0 ± 4.3 (58.6–77.6) |
| Male/total | 123/124 | 92/93 | 31/31 |
| Dates index TKA performed | August 1993- October 2005 | April 2001- October 2005 | August 1993- August 1996 |
| Duration of post-op follow-up, years | 4.9 ± 2.9 (1.3–11.4) | 3.5 ± 1.2 (1.5–6.0) | 9.2 ± 1.9 (1.3–11.4) |
| Charlson score at post-TKA baseline | 0.58 ± 1.00 (0–3) | 0.60 ± 0.89 (0–2) | 0.57 ± 1.13 (0–3) |
| Charlson score at interval 5 post-TKA | 1.85 ± 1.54 (0–5) | 1.53 ± 1.50 (0–5) | 2.7 ± 1.38 (1–5) |
| Medical subscale score of the novel indexaat post-TKA baseline (range 0-47) | 3.7 ± 1.4 (2–6.5) | 3.7 ± 1.03 (2.5–5) | 3.8 ± 1.6 (2–6.5) |
| Medical subscale score of the novel indexaat interval 5 post-TKA (range 0-47) | 7.6 ± 3.6 (2–16.5) | 7.1 ± 3.5 (2–13.5) | 9.0 ± 3.8 (6–16.5) |
| Local subscale score of the novel indexaat post-TKA baseline (range 0-10) | 5.2 ± 1.2 (2.5–7) | 5.1 ± 0.6 (4.5–6) | 5.3 ± 1.5 (2.5–7) |
| Local subscale score of the novel indexaat interval 5 post-TKA (range 0-10) | 1.6 ± 1.2 (0–3) | 1.70 ± 1.3 (0–3) | 1.4 ± 1.1 (0–3) |
a Novel index, novel medical/surgical comorbidity severity index