Table 4.

Study population societal savings over the 2-year study period

Characteristic	Cost (US$)	Direct access group (n=5019)		Mixed access group (n=10 779)		Total (n=15 798)
		Increase (decrease) in occurrence	Savings (US$)	Increase (decrease) in occurrence	Savings (US$)	Increase (decrease) in occurrence	Savings (US$)
Hospitalized	4999	(191)	954 809	(221)	1 104 779	(412)	2 059 588
Head CT	416	74	(30 784)	(103)	42 848	(29)	12 064
Body CT	485	NS		(196)	95 060	(196)	95 060
Chest x-ray	77	800	(61 600)	NS		800	($61 600)
Laboratory tests	18	NS		(258)	4644	(258)	4644
Study societal savings over 13 months*			862 425		1 247 331		2 109 756
Approximate annual savings			796 085		1 151 382		1 947 467

^*The month preceding and the month following the 13-month period contained 17 records (0.11%) of the total set.

NS, non-significant.