Table III.

Components of direct medical costs according to type of shoulder arthroplasty procedure^*

Variable	Primary shoulder arthroplasty (N = 2953)	Two-stage shoulder arthroplasty reimplantation (N = 57)
Room and board	$2547 (2450 to 2644)	$6894 (5926 to 7861)
Pharmacy and medications	$656 (621 to 690)	$2106 (1842 to 2369)
Laboratory and pathology tests	$337 (304 to 370)	$2352 (1931 to 2774)
Implants	$4466 (4384 to 4548)	$6804 (5600 to 8008)

^*Costs were presented as means with 95% confidence intervals.