A.	Internal price variable (used for historical period in table 3)	Percent change in employee benefits per full-time-equivalent worker employed in community hospitals.
	Data sources	Beginning 1976, American Hospital Association, National Hospital Panel Survey. See “Hospital Indicators” in mid-month issues of Hospitals. Prior to 1976, American Hospital Association, Hospital Statistics, Annual Survey, Chicago, Illinois. Unpublished data provided to HEW by the Office of Research Affairs.
	Frequency	For panel survey data, quarterly; for annual survey data, annually.