Table 6

Differences between clinically meaningful subgroups
Clinically meaningful subgroups  Subscale Scores
Overall change following surgery Worse (n = 6) Unchanged (n = 9) Better (n = 45)
Mean SD Mean SD Mean SD
Total score 46.7 19.3 43.9 22.2 14.1 17.1
Pain 28.6 22.6 20.1 17.0 9.9 12.9
Symptoms 27.1 13.3 27.1 11.0 8.9 9.9
Specific activities 40.8 28.8 35.6 24.8 10.9 18.8
Usual activities 16.8 4.3 12.6 11.0 5.4 9.4
Hand strength Both grip and pinch < 80% of opposite hand (n = 8) Either grip or pinch < 80% of opposite hand (n = 7) Grip and pinch both > 80% of opposite hand (n = 25)
Mean SD Mean SD Mean SD
Total score 33.1 18.6 22.1 17.9 14.8 16.7
Pain 20.8 16.4 16.0 12.9 13.4 9.4
Symptoms 19.0 14.1 13.5 9.4 9.8 9.5
Specific activities 24.8 39.7 20.7 16.0 11.2 18.2
Usual activities 13.2 11.1 9.0 9.0 5.3 7.6
Residual symptoms Severe Moderates Mild occasional Asymptomatic
Mean SD Mean SD Mean SD Mean SD
Total score 61.1 29.0 40.4 17.7 17.3 14.5 6.6 16.0
Pain 39.6 24.7 26.9 15.3 10.7 10.7 4.8 10.7
Symptoms 33.8 9.3 23.3 10.8 11.7 9.5 4.3 11.4
Specific activities 54.4 3.4 34.0 25.0 11.7 16.0 5.0 2.6
Usual activities 19.0 9.9 18.2 9.4 4.6 6.8 1.1 2.7

Although there were variations between subsets of scores; there was a significant linear trend across all scores; patients in the best clinical outcome category always were significantly better than the lowest clinical outcome category regardless of the subscale (p < 0.01).

MacDermid and Grewal

MacDermid and Grewal BMC Musculoskeletal Disorders 2013 14:146   doi:10.1186/1471-2474-14-146

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