Postoperative patient-reported outcome measures for FELD and Swespine controls.
| Patient-Reported Outcome Measure | FELD Group (n = 80) | Control Group (n = 400) | P Value | Difference Between Groups, Mean (95% CI) |
| NRSLeg (1 y) | n = 67 | n = 223 | ||
| Mean (SD) (range) | 2.69 (2.68) (2.03; 3.34) | 1.97 (2.49) (1.64; 2.30) | 0.065 | 0.718 (−0.040; 1.429) |
| NRSLeg decrease | n = 43 | n = 219 | ||
| Mean (SD) (range) | −4.35 (2.93) (−5.25; −3.45) | −4.99 (3.12) (−5.40; −4.57) | 0.24 | 0.637 (−0.421; 1.657) |
| NRSLeg % change | n = 43 | n = 219 | ||
| Mean (SD) (range) | −60.2 (36.7) (−71.4; −48.9) | −65.3 (65.0) (−73.9; −56.6) | 0.57 | 5.13 (−18.07; 22.31) |
| NRSBack(1 y) | n = 62 | n = 224 | ||
| Mean (SD) (range) | 2.56 (2.38) (1.96; 3.17) | 2.34 (2.46) (2.02; 2.67) | 0.54 | 0.221 (−0.444; 0.891) |
| NRSBack decrease | n = 36 | n = 200 | ||
| Mean (SD) (range) | −2.72 (2.59) (−3.60; −1.85) | −2.47 (3.05) (−2.89; −2.04) | 0.66 | −0.257 (−1.310; 0.848) |
| NRSBack % change | n = 36 | n = 200 | ||
| Mean (SD) (range) | −46.5 (47.8) (−62.7; −30.3) | −32.1 (108.1) (−47.1; −17.0) | 0.47 | −14.4 (−57.0; 14.6) |
| ODI (1 y) | n = 64 | n = 225 | ||
| Mean (SD) (range) | 17.3 (16.7) (13.2; 21.5) | 15.6 (14.7) (13.7; 17.6) | 0.46 | 1.67 (−2.79; 5.89) |
| 1-y ODI decrease | n = 41 | n = 223 | ||
| Mean (SD) (range) | −28.4 (19.2) (−34.5; −22.3) | −28.7 (18.9) (−31.2; −26.2) | 0.92 | 0.336 (−5.833; 6.645) |
| ODI % change | n = 41 | n = 223 | ||
| Mean (SD) (range) | −61.7 (38.6) (−73.9; −49.5) | −62.9 (35.1) (−67.6; −58.3) | 0.84 | 1.22 (−11.43; 13.17) |
| EQ-VAS (1 y) | n = 64 | n = 218 | ||
| Mean (SD) (range) | 72.1 (19.1) (67.3; 76.8) | 76.4 (16.9) (74.2; 78.7) | 0.095 | −4.35 (−9.14; 0.65) |
| EQ-VAS increase | n = 42 | n = 208 | ||
| Mean (SD) (range) | 28.1 (21.5) (21.4; 34.8) | 27.1 (25.2) (23.6; 30.5) | 0.80 | 1.03 (−6.71; 9.38) |
| EQ-VAS % change | n = 42 | n = 205 | ||
| Mean (SD) (range) | 98.3 (121.3) (60.5; 136.1) | 98.6 (160.9) (76.4; 120.7) | 0.96 | −0.284 (−56.365; 43.688) |
| GALeg | ||||
| GALeg 1–2a | 42 (71.2%) | 183 (81.3%) | −10.1 (−23.8; 3.6) | |
| GALeg 3–5b | 17 (28.8%) | 42 (18.7%) | 0.13 | 10.1 (−3.6; 23.8) |
| GABack | ||||
| GABack 1–2a | 44 (80.0%) | 154 (76.6%) | 3.4 (−9.9; 16.6) | |
| GABack 3–5b | 11 (20.0%) | 47 (23.4%) | 0.74 | −3.4 (−16.6; 9.9) |
Abbreviations: FELD, full-endoscopic lumbar discectomy; GA, global assessment; NRS, Numerical Rating Scale; ODI, Oswestry Disability Index.
GA was measured using a 5-level Likert-scale patient recall question.
↵a GA values 1–2 = pain free and much better.
↵b GA values 3–5 = better, somewhat better, and worse.