Results of multivariable analyses on the cancer care expertise indexes. (A) Results for the multivariable analyses for absolute cancer care expertise index, and (B) for relative cancer care expertise index. The p value indicates the significance of the interaction between men and women for each factor on the cancer care expertise indices. The data reveals that, except for unemployment, all calculated socio-environmental factors were negatively associated with cancer care expertise indexes. However, this association was more pronounced for women. The data underscore that the inaccessibility to public transport had the most substantial impact on health-care access. (C) Interaction between age, number of comorbidities, and gender on the absolute cancer care expertise index, and (D) on the relative cancer care expertise index. As age and the number of comorbidities increased, a more rapid shift towards treatment in lower-volume centres was observed among women compared to men.