Table 1. Descriptive statistics and hypothesis testing results comparing normal and diseased pancreas (pancreatic cancer and chronic pancreatitis) data.
Column 1: Spectral parameters. Column 2–3: Means and standard deviations of spectral parameters averaged over the regions of interest. Row 3: The p-values resulting from Student's T-test assuming equal variance between groups unless otherwise noted.
| Mean Parameter | Normal Pancreas (n = 11) | Diseased Pancreas (n = 30) | T-test p-value |
|---|---|---|---|
| Midband Fit [dB] | −53.2 (8.9) | −63.5 (9.0) | 0.002 |
| Slope [dB/MHz] | 0.085 (0.56) | 0.040 (0.60) | 0.83 |
| Intercept [dB] | −53.6 (10.7) | −63.7 (9.3) | 0.005 |
| Corr. Coefficient R2 | 0.36 (0.10) | 0.34 (0.08) | 0.52 |
| RMS Deviation [dB] | 4.08 (0.29) | 4.65 (0.72) | < 0.001a |
a
T-test assumes unequal variances because Levene's test indicates p < 0.05.