Table 5.
Qualitative analysis
| MRI features | Prevalence | p-value | Interobserver agreement (k) | |
|---|---|---|---|---|
| Nodules | MCAs | 0/43 | <0.0001 | 0.815 |
| MCACs | 20/22 | |||
| Hyper T1 | MCAs | 0/43 | <0.0001 | 0.938 |
| MCACs | 12/22 | |||
| Compression | MCAs | 28/43 | 0.0012 | 0.692 |
| MCACs | 22/22 | |||
| Infiltration | MCAs | 0/43 | 0.0032 | 1.000 |
| MCACs | 5/22 | |||
| Metastases | MCAs | 0/43 | 0.0353 | 1.000 |
| MCACs | 3/22 | |||
k, κ-Cohen; MCAs, mucinous cystoadenomas; MCACs, mucinous borderline tumours and cystoadenocarcinomas; p, p-values between MCAs and MCACs calculated by Fisher test.
The table shows the prevalence in each group (MCAs and MCACs) of qualitative variables: nodules, T1 hyperintensity, compression and infiltration of adjacent organs and metastases, with respective p-values (p) calculated by the Fisher test for comparison of the two groups.
The interobserver agreement values (k) calculated by the κ-Cohen test are also reported.