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. 2020 Jan 30;15(1):e0228424. doi: 10.1371/journal.pone.0228424

Table 3. Summary data for all patients.

All patients (n = 30)
Lesion Count
Image type Mean Differences in means (95% CI) p-value
FO 7.8 Baseline - -
WO 7.5 -0.37 -1.9 to 1.3 0.713
FOC 7.5 -0.37 -1.9 to 1.3 0.713
WOC 8.8 1.29 -0.55 to 2.66 0.196
DWI 11.7 4.83 2.34 to 5.55 <0.001
Sensitivity
Image type Mean Differences in means (95% CI) p-value
FO 0.46 Baseline - -
WO 0.47 0.11 -0.09 to 0.102 0.909
FOC 0.46 0.04 -0.094 to 0.098 0.968
WOC 0.61 2.96 0.049 to 0.242 0.003
DWI 0.72 5.32 0.165 to 0.358 <0.001
PPV
Image type Mean Differences in means (95% CI) p-value
FO 0.75 Baseline - -
WO 0.83 1.68 -0.011 to 0.138 0.094
FOC 0.77 0.41 -0.058 to 0.088 0.683
WOC 0.94 4.55 0.095 to 0.24 <0.001
DWI 0.86 3.13 0.043 to 0.187 0.002
Confidence
Image type Mean Differences in means (95% CI) p-value
FO 2.9 Baseline - -
WO 2.6 -2.12 -0.41 to -0.02 0.034
FOC 2.7 -1.23 -0.32 to 0.07 0.22
WOC 2.9 0.67 -0.13 to 0.26 0.503
DWI 3.2 3.57 0.16 to 0.55 <0.001
True Positives
Image type Mean Differences in means (95% CI) p-value
FO 6.2 Baseline - -
WO 7.0 1.02 -0.697 to 2.208 0.308
FOC 6.6 0.45 -1.112 to 1.786 0.653
WOC 8.4 2.98 0.759 to 3.663 0.003
DWI 10.6 5.92 2.937 to 5.841 <0.001

Lesion count, true positives, sensitivity, positive predictive value and confidence were compared between the five image types for all patients, using the fat only images as the baseline. Regression analyses used image types as the predictor variable, and lesion count/TP/sensitivity/confidence were used as the outcome variable. Mean values were calculated by the regression analysis and were equal to means calculated manually from all patients and all three radiologists.