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Abstract (Results) | 1 | The TTH + group demonstrated the highest muscle T2 values (right side: 31.4 ± 1.2 ms, left side: 31.4 ± 0.8 ms) as compared to the TTH- group or HC group (p < 0.001). | The TTH + group demonstrated the highest muscle T2 values (right side: 31.4 ± 1.2 ms, left side: 31.4 ± 0.8 ms) as compared to the TTH- group or HC group (p = 0.011). |
Statistical analysis | 4 | Statistical analysis was performed using STATA (version 16; StataCorp LP, College Station, TX, USA) and Prism (version 6; GraphPad Prism, San Diego, CA, USA). | Statistical analysis was performed using STATA (version 16; StataCorp LP, College Station, TX, USA), Excel (2019 MSO, version 2410; Microsoft Corp., Redmond, WA, USA), and Prism (version 6; GraphPad Prism, San Diego, CA, USA). |
T2 values of the trapezius muscles | 5 | The HC group demonstrated the lowest T2 values (right side: 30.0 ± 1.1 ms, left side: 30.2 ± 1.1 ms), followed by the TTH- group (right side: 30.8 ± 1.1 ms, left side: 30.9 ± 1.1 ms) and the TTH + group (right side: 31.4 ± 1.2 ms, left side: 31.4 ± 0.8 ms). | The HC group demonstrated the lowest T2 values (right side: 30.0 ± 1.1 ms, left side: 30.2 ± 1.1 ms), followed by the TTH- group (right side: 30.8 ± 1.1 ms, left side: 31.1 ± 1.2 ms) and the TTH + group (right side: 31.4 ± 1.2 ms, left side: 31.4 ± 0.8 ms). |
T2 values of the trapezius muscles | 5 | However, statistically significant associations for the average T2 value (mean of left- and right-sided trapezius muscles) and group assignments were observed (HC vs. TTH-: p < 0.001; HC vs. TTH+: p < 0.001; TTH- vs. TTH+: p < 0.001). | However, statistically significant associations for the average T2 value (mean of left- and right-sided trapezius muscles) and group assignments were observed (HC vs. TTH-: p = 0.048; HC vs. TTH+: p = 0.011; TTH- vs. TTH+: p = 0.239; delta method: HC / TTH- / TTH+: p < 0.001). |
Group differentiation based on T2 values | 6 | With average T2 as the predictor, the AUC for differentiating between the HC and TTH- groups was 0.68 (OR: 2.03, 95%-CI: 1.01–4.11, p = 0.04), and it was 0.82 for the differentiation between the HC and TTH + groups (OR: 3.80, 95%-CI: 1.36–10.61, p = 0.01). Furthermore, the AUC for differentiating between the TTH- and TTH + groups was 0.69 (OR: 1.61, 95%-CI: 0.73–3.53, p = 0.24). | With average T2 as the predictor, the AUC for differentiating between the HC and TTH- groups was 0.68 (OR: 2.03, 95%-CI: 1.01–4.11, p = 0.04), and it was 0.82 for the differentiation between the HC and TTH + groups (OR: 3.80, 95%-CI: 1.36–10.61, p = 0.01). Furthermore, the AUC for differentiating between the TTH- and TTH + groups was 0.69 (OR: 1.61, 95%-CI: 0.73–3.53, p = 0.24). |