Table 1.
Patient demographics and clinical information.
| Clinical factors | Testing cohort (n=55) | P1 | P2 | P3 | P4 | Training cohort (n=128) | P1 | P2 | P3 | P4 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PA (n=20) | WT (n=19) | BPGT (n=39) | MPGT (n=16) | PA (n=48) | WT (n=43) | BPGT (n=91) | MPGT (n=37) | |||||||||
| Age | 32.53 ± 12.20 | 60.69 ± 8.82 | 47.67 ± 16.82 | 54.67 ± 13.84 | 0.000 | 0.000 | 0.425 | 0.667 | 37.50 ± 15.71 | 56.67 ± 15.48 | 47.11 ± 17.81 | 49.65 ± 15.00 | 0.000 | 0.050 | 0.077 | 0.470 |
| Gender (M/F) | 6/14 | 18/1 | 24/15 | 11/5 | 0.000 | 0.042 | 0.073 | 0.761 | 18/30 | 42/1 | 60/31 | 27/10 | 0.000 | 0.002 | 0.002 | 0.533 |
| Margin (well-demarcated/poorly demarcated) | 18/2 | 13/6 | 31/8 | 7/9 | 0.127 | 0.004 | 0.182 | 0.022 | 44/4 | 35/8 | 79/12 | 14/23 | 0.216 | 0.000 | 0.000 | 0.000 |
| DLI (absent/present) | 15/5 | 12/7 | 27/12 | 3/13 | 0.501 | 0.002 | 0.016 | 0.001 | 38/10 | 31/12 | 69/22 | 13/24 | 0.470 | 0.000 | 0.001 | 0.000 |
| Heterogeneous appearance (absent/present) | 10/10 | 13/6 | 23/16 | 4/12 | 0.333 | 0.176 | 0.018 | 0.037 | 32/16 | 21/22 | 53/38 | 9/28 | 0.094 | 0.000 | 0.037 | 0.001 |
| Cystic or necrotic areas (absent/present) | 15/5 | 12/7 | 27/12 | 5/11 | 0.501 | 0.017 | 0.092 | 0.015 | 30/18 | 22/21 | 52/39 | 13/24 | 0.297 | 0.016 | 0.179 | 0.032 |
| IST (absent/present) | 20/0 | 19/0 | 39/0 | 9/7 | — | 0.001 | 0.002 | 0.002 | 48/0 | 42/1 | 90/1 | 21/16 | 0.473 | 0.000 | 0.000 | 0.000 |
| Type of contrast enhancement (focal/diffuse) | 19/1 | 17/2 | 36/3 | 10/6 | 0.605 | 0.030 | 0.105 | 0.013 | 45/3 | 39/4 | 84/7 | 28/9 | 0.703 | 0.027 | 0.126 | 0.017 |
Numerical data are presented as mean ± standard deviation, categorical data as numbers (n). PA, pleomorphic adenomas; WT, Warthin tumor; BPGT, benign parotid gland tumor, MPGT, malignant parotid gland tumor; M, male; F, female; DLI, deep lobe involved; IST, infiltration of surrounding tissue; P1 Value, represents PA compared with WT; P2 Value, represents PA compared with MPGT; P3 Value, represents WT compared with MPGT; P4 Value, represents BPGT compared with MPGT. P-values of age and gender are the results of independent-samples t-tests; P-values of margin, DLI, heterogeneous appearance, cystic or necrotic areas, IST and type of contrast enhancement are the results of chi-square test.