highly significantP < 0.001
The model remained highly significant ( P < 0.001) also when validated using a binary logistic regression model, as described in Methods.
The model remained highly significant ( P < 0.001) also when validated using a binary logistic regression model, as described in Methods.
Although borderline non-significant ( χ 2 test, P = 0.054), a higher percentage of patients with metastatic lymph nodes were identified in the MDACC cohort (i.e. 16% MDACC vs. 8.5% Bergen cohort).