Women are twice as likely to die six months on from a heart attack, according to a study published in the Medical Journal of Australia.

The root of the problem was found to be treatment access, with women less likely to get tests to find blockages, as well as lower rates of referral for rehabilitation or access to preventative measures.

Senior author of the study, Professor Clara Chow, could not find a reason why there is a disparity in access between men and women, but believes unconscious bias may be to blame.