Table 4 Comparison of patient-reported outcome scores between non-obese, obese, and morbidly obese cohorts
Non-obese (BMI < 30) (n = 154) | Obese (BMI 30–40) (n = 158) | Morbidly Obese (BMI > 40) (n = 38) | P Value | |
|---|---|---|---|---|
Oxford Knee Score | ||||
Preoperative | 25.3 (7.6)** | 22.9 (8.3)** | 20.3 (7.3)** | *0.001 |
6 month | 41.0 (39.3–41.0) | 41.0 (41.0–41.0) | 41.0 (40.0–44.0) | 0.824 |
1 year | 43.0 (41.0–46.0) | 43.0 (41.0–44.0) | 43.0 (39.3–47.0) | 0.521 |
2 year | 46.0 (41.0–47.0) | 44.0 (40.0–47.0) | 44.0 (38.0–47.0) | 0.214 |
SF-12 Physical | ||||
Preoperative | 32.0 (26.1–39.5) | 30.0 (25.1–34.9) | 28.7 (25.8–37.6) | *0.046 |
6 month | 44.6 (42.8–48.1) | 44.6 (42.1–45.7) | 44.6 (40.3–52.5) | 0.517 |
1 year | 49.4 (42.1–55.1) | 49.4 (41.9–52.7) | 49.4 (37.2–55.2) | 0.500 |
2 year | 50.7 (40.0–55.9) | 49.7 (37.0–54.6) | 48.9 (38.1–54.5) | *0.047 |
SF-12 Mental | ||||
Preoperative | 57.0 (46.5–62.7) | 55.4 (43.5–62.6) | 51.5 (42.2–60.5) | 0.244 |
6 month | 57.8 (56.8–57.9) | 57.8 (55.8–58.3) | 57.8 (53.3–60.8) | 0.907 |
1 year | 56.3 (53.2–59.0) | 56.3 (52.3–58.6) | 56.3 (43.2–60.0) | 0.346 |
2 year | 57.8 (53.2–59.8) | 57.4 (50.7–59.8) | 57.0 (47.3–60.6) | 0.425 |