Table 8 Responsiveness of the NDI over time, anchored by self-reported change in neck injury
From: Properties of patient-reported outcome measures in individuals following acute whiplash injury
T0 | T1 | ∆ | SRM (95% CI) | ES (95% CI) | n | |
|---|---|---|---|---|---|---|
NDI 4 months to 8 months with anchor of neck injury change 4 months to 8 months | ||||||
Much worse | N/A | N/A | N/A | N/A | N/A | 0 |
Worse | 23.764 | 29.804 | 6.040 | 0.5816 (0.2790, 0.8791) | 0.4163 (0.0190, 0.8116) | 50 |
Same | 16.031 | 15.753 | −0.560 | −0.0735 (−0.1916, 0.0447) | −0.0336 (−0.2004, 0.1333) | 276 |
Better | 22.030 | 16.853 | −5.446 | −0.5521 (−0.6655, −0.4380) | −0.4129 (−0.5642, −0.2613) | 342 |
Much better | 11.212 | 4.775 | −6.439 | −0.7657 (−0.8904, −0.6400) | −0.7691 (−0.9302, −0.6075) | 317 |
NDI 8 months to 12 months with anchor of neck injury change 8 months to 12 months | ||||||
Much worse | 34.800 | 47.600 | 12.800 | 0.9257 (−0.1823, 1.9635) | 0.5261 (−0.7546, 1.7759) | 5 |
Worse | 21.653 | 27.792 | 6.139 | 0.6321 (0.3500, 0.9096) | 0.4117 (0.0461, 0.7755) | 59 |
Same | 13.269 | 13.155 | −0.114 | −0.0179 (−0.1212, 0.0854) | −0.0075 (−0.1536, 0.1386) | 360 |
Better | 16.921 | 12.897 | −4.024 | −0.5046 (−0.6302, −0.3782) | −0.3391 (−0.5079, −0.1700) | 273 |
Much better | 7.873 | 4.192 | −3.681 | −0.6068 (−0.7320, −0.4807) | −0.4831 (−0.6486, −0.3172) | 288 |
NDI: above two combined | ||||||
Much worse | 34.800 | 47.600 | 12.800 | 0.9257 (−0.1823, 1.9635) | 0.5261 (−0.7546, 1.7759) | 5 |
Worse | 22.709 | 28.799 | 6.090 | 0.6074 (0.4018, 0.8106) | 0.4134 (0.1446, 0.6813) | 109 |
Same | 14.650 | 14.454 | −0.337 | −0.0486 (−0.1263, 0.0292) | −0.0213 (−0.1312, 0.0886) | 636 |
Better | 19.476 | 14.875 | −4.735 | −0.5218 (−0.6059, −0.4374) | −0.3752 (−0.5879, −0.3752) | 615 |
Much better | 9.543 | 4.484 | −5.060 | −0.6850 (−0.7733, −0.5962) | −0.6307 (−0.7460, −0.5151) | 605 |