Frank Szmulowicz, Ph. D. Jun 27, 2014:

You are most welcome, of course. I assume that the larger context dictated your choice. From the provided excerpt, "wydatki" itself sounds like expenses, while środki has the flavor of sources, means, and/or resources. Good luck

Kjub (asker) Jun 27, 2014:

Dziękuję za pomoc, zdecydowałem się jednak na "expenses of patients".