Fig. 3

Nomograms to evaluate OS in patients with brain metastases from CRC. Using the nomogram, the 1-year, 3-year, and 5-year probability of survival can be estimated, which reflects the effects of prognostic factors. The KPS score and number of brain metastases had a skewed distribution and were grouped into categories before modeling. BM, brain metastases; KPS, Karnofsky performance status; prob., probability.