|  | Dichotomous 1-versus-1 models | |||||
---|---|---|---|---|---|---|---|
Variable | MLR | Ben vs Bord | Ben vs PrInv | Ben vs Meta | Bord vs PrInv | Bord vs Meta | PrInv vs Meta |
Logistic regression-based variable selection | Â | Â | Â | Â | Â | Â | Â |
   Ascites | × |  | × | × | × | × | × |
   Maximal diameter of solid part | × |  | × | × | × | × |  |
   Age | × |  | × | × |  |  |  |
   Entirely solid tumor | × |  |  | × |  | × | × |
   Irregular internal cyst walls | × |  | × | × |  |  |  |
   Personal history of ovarian cancer | × |  |  |  |  |  | × |
   Bilateral tumors | × |  |  |  | × |  |  |
   Maximal diameter of lesion | × | × |  |  |  |  |  |
   Papillary structures with blood flow | × | × | × |  |  |  |  |
   Unilocular tumor |  | × |  |  |  |  |  |
R1U variable selection* | Â | Â | Â | Â | Â | Â | Â |
   Ascites |  |  | × | × | × | × | × |
   Maximal diameter of solid part |  |  | × | × | × | × |  |
   Age |  | × | × |  | × |  |  |
   Entirely solid tumor |  |  |  | × |  | × | × |
   Irregular internal cyst walls |  |  | × | × | × |  |  |
   Personal history of ovarian cancer |  | × |  |  |  |  | × |
   Bilateral tumors |  |  |  |  | × |  |  |
   Maximal diameter of lesion |  | × |  |  |  |  |  |
   Papillary structures with blood flow |  | × |  |  |  |  |  |
   Number of papillations |  | × |  |  |  |  |  |
   Acoustic shadows |  |  | × |  |  |  |  |