Table 1.
Weighted Arithmetic Means and Change in Outcome Scores From 4 to 104 Weeks of Follow-up a
| VAS | DASH | PRTEE | MAYO | |||||
|---|---|---|---|---|---|---|---|---|
| Follow-up | Score, Mean ± SD | ΔVAS vs Baseline, Points (% Improvement) | Score, Mean ± SD | ΔDASH vs Baseline, Points (% Improvement) | Score, Mean ± SD | ΔPRTEE vs Baseline, Points (% Improvement) | Score, Mean ± SD | ΔMAYO vs Baseline, Points (% Improvement) |
| Baseline | 7.40 ± 1.30 | NA | 60.8 ± 12.5 | NA | 55.6 ± 14.7 | NA | 55.5 ± 6.1 | NA |
| n = 684 | n = 458 | n = 384 | n = 193 | |||||
| 4 wk | 4.43 ± 1.73 b | 2.97 c (39.1) | 41.6 ± 16.4 b | 19.2 c (27.0) | 47.3 ± 19.6 b | 8.3 (18.7) | 79.7 ± 8.8 b | 24.2 c (39.2) |
| n = 471 | n = 583 | n = 233 | n = 233 | n = 217 | n = 217 | n = 138 | n = 138 | |
| 8 wk | 3.53 ± 2.07 b | 3.87 c (54.6) | 32.2 ± 16.8 b | 28.6 c (37.5) | 31.4 ± 20.9 b | 24.2 c (45.2) | 79.5 ± 12.0 b | 24.0 (49.9) |
| n = 332 | n = 480 | n = 205 | n = 205 | n = 200 | n = 200 | n = 31 | n = 67 | |
| 12 wk | 2.41 ± 1.58 b | 4.99 c (63.2) | 28.5 ± 12.6 b | 32.2 c (56.8) | 25.4 ± NR | 30.2 c (63.2) | 88.7 ± 5.1 b | 33.2 c (67.7) |
| n = 410 | n = 501 | n = 276 | n = 276 | n = 234 | n = 234 | n = 70 | n = 70 | |
| 24 wk | 2.01 ± 1.61 b | 5.39 c (70.9) | 22.9 ± 18.0 b | 37.9 c (52.2) | 25.5 ± 20.6 b | 30.1 c (66.0) | 86.2 ± 5.6 b | 30.7 c (51.8) |
| n = 384 | n = 476 | n = 210 | n = 210 | n = 249 | n = 249 | n = 117 | n = 153 | |
| 52 wk | 1.57 ± 1.66 b | 5.83 c (76.8) | 19.3 ± 16.8 b | 41.5 c (63.9) | 9.0 ± NR | 46.6 c (87.2) | 93.0 ± 6.7 b | 37.5 c (67.0) |
| n = 325 | n = 361 | n = 201 | n = 201 | n = 50 | n = 50 | n = 142 | n = 178 | |
| 104 wk | 3.71 ± 2.35 b | 3.69 c (50.2) | 13.0 ± 18.5 b | 47.8 c (76.7) | 48.8 ± 4.1 b | 6.8 (28.9) | NR | NR |
| n = 132 | n = 132 | n = 82 | n = 82 | n = 81 | n = 81 | |||
a References: VAS pain score, 1-3, 11, 14, 15, 16, 18, 19, 22, 23, 25, 30, 32, 36-41; ΔVAS, 1-3, 11, 13, 15, 16, 18, 19, 22-25, 30, 32, 36-41; DASH score, 1, 11-13, 15, 16, 18, 21, 22, 28, 37, 40; ΔDASH, 1, 11, 12, 14, 15, 16, 18, 21, 22, 28, 37, 40; PRTEE score, 1, 5, 12, 20, 23, 24, 28; ΔPRTEE, 1, 5, 12, 20, 23, 24, 28; MAYO score, 3, 11, 16, 19, 30, 36; ΔMAYO, 3, 11, 16, 19, 30, 36. DASH, Disabilities of the Arm, Shoulder and Hand; MAYO, Mayo Clinic Performance Index; NA, not applicable; NR, not reported; PRTEE, Patient-Rated Tennis Elbow Evaluation; VAS, visual analog scale for pain.
b Statistically significant difference versus baseline (P < .0001).
c Difference in score is greater than minimal clinically important difference.