This Moody’s study, released in 2002, examines historic default rates among all Moody’s-rated municipal bonds between 1970-2000.
The key highlight is that of all of the municipal bond issues rated by Moody’s over this 30 year span, there were a total of 18 defaults. 10 of the 18 defaults were hospital-related. The study examines the characteristics of each default.
moody’s municipal bond default study-1970-2000 in PDF

