In women and South Asians, both those with typical and atypical pain have lower rates of angiography and coronary interventions compared with men and white people respectively.
In the study of 7784 South Asian and white people in the UK, researchers also found that more women than men and more South Asians compared with white people reported atypical chest pain and were less likely to receive a diagnosis of angina.
"Women and South Asian people with typical chest pain were at increased risk of adverse coronary outcomes compared with those who presented with atypical pain," said Dr. Justin Zaman of University College London and UK-based colleagues.
Differences in the description of symptoms did not account for the lower rates of intervention.
"Further study should examine why South Asians and white women with potentially the same adverse prognosis as men received poorer care," the researchers said.