Differences in medical costs among urban lung cancer patients with different health insurance schemes: a retrospective study.

Compared with the URBMI patients, the UEBMI lung cancer patients obtained more or even better health services and had reduced financial burden. The differences in insurances among cities were greater, compared to those among insurances within cities, and the differences in OOP expenses between cities were greater compared to those between UEBMI and URBMI. Our results called for further reform of China's fragmented insurance schemes.