Having looked without much success for empirical evidence about the impact of better management on "development", I came across the following article in the Washington Post. You might find it useful.

The article reports on the impact of introducing check lists to surgery:

Surgery Checklist Lowers Death Rate

Teams Using Cheat Sheets Also Reduce Patients’ Complications, Study Shows

By Ceci Connolly
Washington Post Staff Writer
Thursday, January 15, 2009; A02

The posted comments on the article are also interesting.