Like this one: https://jamanetwork.com/journals/jamasurgery/article-abstrac...

> Among patients undergoing cancer surgery, waiting times to initiation of first-course therapy have steadily increased since 2012, particularly at high-volume academic centers and among patients referred for definitive care. With continued consolidation and expansion of health systems, system-level strategies are urgently needed to monitor and mitigate delays in the delivery of surgical care for cancer.

> Delays were more pronounced at academic compared with community hospitals and among patients referred for care. Predictors of longer waiting time included Medicaid insurance (5 of 6 cancers), lowest-quartile income (6 of 6 cancers), Black race (5 of 6 cancers), increased travel distance (4 of 6 cancers), care in the West region (6 of 6 cancers), and treatment at academic institutions (6 of 6 cancers). Receipt of robotic operations was linked with longer waiting times for nonbreast malignancies (5 of 5 cancers).

Those studies have all, to my knowledge of them, shown no system mode that is better or worse than any other. The USA for many categories of care has often in those studies had worse wait times compared to nations with fully nationalized healthcare.

Heck when I went to college in Ohio's capital, the recommendation on how to get psychiatry or therapy as a new patient was to call the suicide helpline and claim that you were suicidal. That would get you a new patient appointment within 72 hours versus over 3 months on average for patients looking to get into care through normal channels.