Table 4. Differences between hospital charges from April 1990 through October 1991 for inpatients with and without computerized display of test and medication information

Type of charge	Average charge per admission		Difference	Percent reduction
Type of charge	With computerized display	Without computerized display	Difference	Percent reduction
Total	$6,077	$6,964	$887	12.7
Bed	$2,283	$2,551	$268	11.9
Tests	$1,621	$1,852	$231	12.5
Medications	$1,001	$1,181	$180	15.3

Source: Tierney WM, Miller ME, Overhage M, et al. Physician inpatient order writing on microcomputer workstations. JAMA 1993; 269(3):379-83.