Table 2 Baseline and follow-up means of the clinical scales, significance of intra-group changes and follow-up duration in months (NC = nucleated cells, SD = standard deviation, LEFS = lower extremity functional scale, NPS = numeric pain scale, IKDC = international knee documentation committee scale, P-values are for intra-group changes, improvement rating = percentage improvement rating scale)
|  | NC ≤ 4 × 108 cells |  | NC > 4 × 108 cells |  | ||||
|---|---|---|---|---|---|---|---|---|
Variable | N | Mean | SD | P-value | N | Mean | SD | P-value |
NPS | ||||||||
Baseline | 67 | 4 | 2 | Â | 49 | 3.1 | 1.8 | Â |
Follow-up | 67 | 3.1 | 2.5 | Â | 49 | 1.7 | 2.1 | Â |
Change | 67 | −0.9 | 2.7 | .006 | 49 | −1.5 | 2.5 | <.001 |
Follow-up duration | 67 | 10.6 | 8.5 | Â | 49 | 11 | 8.6 | Â |
LEFS | ||||||||
Baseline | 57 | 48.8 | 13.9 | Â | 37 | 50.7 | 13.9 | Â |
Follow-up | 57 | 53.5 | 18.7 | Â | 37 | 59.6 | 17 | Â |
Change | 57 | 4.8 | 16.7 | .001 | 37 | 8.9 | 15.3 | .002 |
Follow-up duration | 57 | 8.5 | 6.5 | Â | 37 | 8.5 | 6.1 | Â |
IKDC | ||||||||
Baseline | 25 | 45 | 16.1 | Â | 22 | 55.9 | 16.6 | Â |
Follow-up | 25 | 64.7 | 18 | Â | 22 | 70.1 | 16.7 | Â |
Change | 25 | 19.7 | 15.5 | <.001 | 22 | 14.2 | 14.7 | .004 |
Follow-up duration | 25 | 6.3 | 7.5 | Â | 22 | 5.7 | 3.5 | Â |
Improvement rating | ||||||||
Follow-up | 137 | 47 | 37.1 | Â | 103 | 48.3 | 41.3 | Â |
Follow-up duration | 137 | 14.8 | 11.6 | Â | 103 | 13.4 | 10.7 | Â |