The Table Below Comes from a Study of Ovarian Cancer

Multiple Choice

The table below comes from a study of ovarian cancer survival in Australia (Anuradha et al., 2015) .
Risk of mortality in a prognostic cohort study of women with invasive epithelial ovarian
Cancer according to the number of comorbidities at time of diagnosis (Australia, 2005) These data suggest that (select all that apply) :

A) Compared to women with no comorbidity, having 3 or more co‐morbidities at diagnosis was associated with higher risk of mortality, but this association was
Partially confounded by age
B) Compared to women with no comorbidity, having 3 or more comorbidities at diagnosis was associated with higher risk of mortality and there was no confounding
By age
C) Compared to women with no co‐morbidity, having a greater number of comorbidities at diagnosis was not associated with a higher risk of mortality
D) The trend of increasing mortality with greater comorbidity seen in the unadjusted data disappeared after adjustment for age