Table 9 Responsiveness of the EQ-5D to changes between 4 and 12 months, anchored by NDI classifications
From: Properties of patient-reported outcome measures in individuals following acute whiplash injury
T0 | T1 | ∆ | SRM (95% CI) | ES (95% CI) | n | |
|---|---|---|---|---|---|---|
EQ-5D utility changes based on NDI score changes | ||||||
Decrease | 0.7563 | 0.8639 | 0.1076 | 0.6034 (0.5211, 0.6854) | 0.5890 (0.4798, 0.6980) | 673 |
No change | 0.9215 | 0.9267 | 0.0053 | 0.0465 (−0.0958, 0.1887) | 0.0381 (−0.1630, 0.2392) | 190 |
Increase | 0.7872 | 0.7526 | −0.3145 | −1.7008 (−1.9078, −1.4921) | −1.4186 (−1.6280, −1.2078) | 218 |
EQ-5D utility changes based on Vernon category changes | ||||||
Decrease | 0.7121 | 0.8706 | 0.1585 | 0.8649 (0.7452, 0.9838) | 0.8734 (0.7225, 1.0238) | 371 |
No change | 0.8412 | 0.8662 | 0.0250 | 0.1780 (0.0993, 0.2566) | 0.1420 (0.0315, 0.2525) | 631 |
Increase | 0.7682 | 0.6588 | −0.1094 | −0.4952 (−0.7275, −0.2600) | −0.4259 (−0.7406, −0.1098) | 79 |
EQ-5D utility changes based on 4 month Vernon categories | ||||||
None | 0.9431 | 0.9392 | 0.0061 | 0.0505 (−0.0509, 0.1519) | 0.0545 (−0.0889, 0.1978) | 374 |
Mild | 0.7682 | 0.8570 | 0.0888 | 0.5061 (0.4107, 0.6010) | 0.6156 (0.4858, 0.7451) | 479 |
Moderate | 0.6375 | 0.7174 | 0.0798 | 0.3444 (0.1972, 0.4907) | 0.4195 (0.2154, 0.6231) | 189 |
Severe | 0.3879 | 0.5329 | 0.1451 | 0.4987 (0.1488, 0.8423) | 0.4964 (0.0255, 0.9639) | 36 |
Complete | 0.1783 | 0.4307 | 0.2523 | 0.9407 (−0.5358, 2.2996) | 1.5170 (−0.4398, 3.3493) | 3 |
EQ-5D utility changes based on 12 month Vernon categories | ||||||
None | 0.8712 | 0.9563 | 0.0851 | 0.5622 (0.4752, 0.6488) | 0.6759 (0.5584, 0.7931) | 590 |
Mild | 0.7364 | 0.7848 | 0.0484 | 0.2643 (0.1561, 0.3701) | 0.3179 (0.1695, 0.4660) | 354 |
Moderate | 0.6325 | 0.6218 | −0.0106 | −0.0442 (−0.2239, 0.1357) | −0.0489 (−0.3030, 0.2053) | 119 |
Severe | 0.3964 | 0.3452 | −0.0512 | −0.1335 (−0.6573, 0.3953) | −0.1995 (−0.9404, 0.5452) | 14 |
Complete | 0.0300 | 0.1683 | 0.1383 | 1.4385 (−0.0687, 2.8662) | 0.5549 (−0.8860, 1.9529) | 4 |
EQ-5D utility changes based on stirling trajectories | ||||||
Mild | 0.8488 | 0.9090 | 0.0602 | 0.3913 (0.3201, 0.4623) | 0.4292 (0.3311, 0.5272) | 818 |
Moderate | 0.6383 | 0.7819 | 0.1436 | 0.6822 (0.4871, 0.8751) | 0.8367 (0.5783, 1.0935) | 126 |
Chronic-severe | 0.5908 | 0.5803 | −0.0104 | −0.0408 (−0.2082, 0.1268) | −0.0418 (−0.2786, 0.1951) | 137 |