Table 4:
Linear least-squares pairwise comparisons for T2, AFD, and FF across MUR and FP/PSW grades. Positive values indicate the first group had a larger average than the second group. P-values used a Benjamin-Hochberg correction for multiple comparison, whereby p<0.05 was considered statistically significant.
| Comparison | Difference | 95% CI | p-value | |
|---|---|---|---|---|
| MUR | T2 (msec) | |||
| Decreased - Full | +8.36 | +4.05, +12.68 | 0.0005** | |
| Discrete - Full | +13.98 | +10.10, +17.87 | <0.0001*** | |
| None - Full | +14.67 | +11.12, +18.22 | <0.0001*** | |
| Discrete - Decreased | +5.62 | +0.75, +10.49 | 0.0305* | |
| None - Decreased | +6.30 | +1.40, +11.21 | 0.0197* | |
| None - Discrete | +0.68 | −3.03, +4.40 | 0.7185 | |
| AFD (μm) | ||||
| Decreased - Full | −11.04 | −18.92, −3.18 | 0.0136* | |
| Discrete - Full | −18.91 | −26.01, −11.82 | <0.0001*** | |
| None - Full | −21.58 | −28.01, −15.15 | <0.0001*** | |
| Discrete - Decreased | −7.86 | −16.68, +0.94 | 0.0990 | |
| None - Decreased | −10.53 | −19.29, −1.77 | 0.0301* | |
| None - Discrete | −2.66 | −9.39, +4.06 | 0.4392 | |
| FF (%) | ||||
| Decreased - Full | +0.036 | −1.01, +1.74 | 0.6080 | |
| Discrete - Full | +2.92 | +1.70, +4.15, | 0.0001** | |
| None - Full | +1.46 | +0.34, +2.60 | 0.0238* | |
| Discrete - Decreased | +2.56 | +1.00, +4.13 | 0.0054* | |
| None - Decreased | +1.10 | −0.50, +2.71 | 0.2160 | |
| None - Discrete | −1.45 | −2.62, −0.29 | 0.0238* | |
| FP/PSW | T2 (msec) | |||
| ‘1+’ – ‘0’ | +12.54 | +7.06, +18.02 | <0.0001*** | |
| ‘2+’ – ‘0’ | +9.59 | +6.06, +13.13 | <0.0001*** | |
| ‘3+’ – ‘0’ | +15.04 | +11.11, +18.99 | <0.0001*** | |
| ‘2+’ – ‘1+’ | −2.94 | −8.82, +2.93 | 0.3912 | |
| ‘3+’ – ‘1+’ | +2.50 | −3.20, +8.20 | 0.3912 | |
| ‘3+’ – ‘2+’ | +5.44 | +1.12, +9.77 | 0.0226* | |
| AFD (μm) | ||||
| ‘1+’ – ‘0’ | −4.80 | −14.54, +4.93 | 0.4023 | |
| ‘2+’ – ‘0’ | −16.25 | −22.75, −9.75 | <0.0001*** | |
| ‘3+’ – ‘0’ | −18.66 | −25.80, −11.53 | <0.0001*** | |
| ‘2+’ – ‘1+’ | −11.44 | −21.88, −1.01 | 0.0503 | |
| ‘3+’ – ‘1+’ | −13.85 | −23.78, −3.94 | 0.0142* | |
| ‘3+’ – ‘2+’ | −2.41 | −10.26, +5.44 | 0.5479 | |
| FF (%) | ||||
| ‘1+’ – ‘0’ | +1.23 | −0.64, +3.11 | 0.3969 | |
| ‘2+’ – ‘0’ | +0.61 | −0.55, +1.78 | 0.4564 | |
| ‘3+’ – ‘0’ | +1.67 | +0.35, +2.99 | 0.0891 | |
| ‘2+’ – ‘1+’ | −0.622 | −2.64, +1.39 | 0.6551 | |
| ‘3+’ – ‘1+’ | +0.43 | −1.50, +2.36 | 0.6623 | |
| ‘3+’ – ‘2+’ | +1.05 | −0.40, +2.51 | 0.3969 | |
*
<0.05
**
<0.005
***
<0.0001
AFD: apparent fiber diameter, FF: fat fraction, EMG: electromyography, MUR: motor unit recruitment, FP/PSW: fibrillation potentials/positive sharp waves