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. 2021 Sep 14;11:18280. doi: 10.1038/s41598-021-97680-y

Table 2.

Receiver Operating Characteristic curves of changes in thickness and cross-sectional area of muscles over time.

Muscles Lateral Variable ROC-AUC SE P 95% CI for ROC-AUC
Lower Upper
BB Left Thickness
ΔTHday4 0.782 0.076 0.005 0.632 0.932
ΔTHday7 0.705 0.087 0.042 0.535 0.875
ΔTHday10 0.708 0.095 0.039 0.523 0.894
Cross-sectional area
ΔCSAday4 0.551 0.094 0.611 0.367 0.735
ΔCSAday7 0.676 0.090 0.080 0.500 0.853
ΔCSAday10 0.647 0.092 0.143 0.466 0.828
Right Thickness
ΔTHday4 0.702 0.090 0.045 0.526 0.877
ΔTHday7 0.792 0.081 0.004 0.632 0.951
ΔTHday10 0.756 0.078 0.011 0.603 0.910
Cross-sectional area
ΔCSAday4 0.728 0.083 0.024 0.566 0.889
ΔCSAday7 0.692 0.086 0.056 0.524 0.861
ΔCSAday10 0.676 0.090 0.080 0.500 0.852
RF Left Thickness
ΔTHday4 0.747 0.086 0.014 0.578 0.915
ΔTHday7 0.583 0.094 0.408 0.399 0.768
ΔTHday10 0.696 0.092 0.052 0.515 0.876
Cross-sectional area
ΔCSAday4 0.593 0.093 0.356 0.410 0.776
ΔCSAday7 0.689 0.088 0.061 0.516 0.862
ΔCSAday10 0.699 0.088 0.049 0.527 0.870
Right Thickness
ΔTHday4 0.734 0.091 0.020 0.555 0.913
ΔTHday7 0.779 0.080 0.006 0.622 0.936
ΔTHday10 0.840 0.068 0.001 0.707 0.972
Cross-sectional area
ΔCSAday4 0.635 0.092 0.181 0.454 0.815
ΔCSAday7 0.843 0.068 0.001 0.710 0.976
ΔCSAday10 0.888 0.052  < 0.001 0.785 0.990
VI Left Thickness
ΔTHday4 0.590 0.094 0.373 0.406 0.774
ΔTHday7 0.660 0.088 0.112 0.487 0.833
ΔTHday10 0.785 0.074 0.005 0.640 0.931
Right Thickness
ΔTHday4 0.571 0.106 0.484 0.364 0.777
ΔTHday7 0.734 0.086 0.020 0.565 0.903
ΔTHday10 0.779 0.086 0.006 0.611 0.947

BB, biceps brachii; RF, rectus femoris; VI, vastus intermedius; ΔTH, changes in thickness; ΔCSA, changes in cross-sectional area; SE, standard error; ROC-AUC, receiver operating characteristic curves with calculated area under the curve; CI, confidence interval.