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. Author manuscript; available in PMC: 2014 Aug 26.
Published in final edited form as: Obstet Gynecol. 2014 May;123(5):1038–1048. doi: 10.1097/AOG.0000000000000244

Table 4.

Cost Models of Minimally Invasive Hysterectomy

Analysis Benign Indications Endometrial Cancer
Unadjusted
 Total cost 1,617 (1,581–1,653) 1,454 (1,279–1,629)
 Variable cost 943 (918–969) 850 (752–948)
 Fixed cost 626 (602–649) 753 (672–835)
Unadjusted direct costing hospitals only
 Total cost 1,995 (1,948–2,041) 1,875 (1,670–2,081)
 Variable cost 1,132 (1,107–1,158) 1,017 (907–1,128)
 Fixed cost 801 (774–828) 922 (799–1,046)
Fully adjusted*
 Total cost 1,225 (1,177–1,272) 1,328 (1,164–1,491)
 Variable cost 922 (895–948) 936 (847–1,024)
 Fixed cost 374 (349–399) 453 (361–544)
Fully adjusted, complications removed
 Total cost 1,222 (1,171–1,272) 1,375 (1,219–1,530)
 Variable cost 920 (896–944) 956 (867–1,045)
 Fixed cost 372 (347–396) 432 (347–517)
Fully adjusted, physician volume fewer than 5 cases
 Total cost 1,443 (1,362–1,524) 1,495 (1,284–1,705)
 Variable cost 974 (927–1,021) 985 (850–1,120)
 Fixed cost 566 (412–619) 560 (418–701)
Fully adjusted, physician volume 16–30 cases
 Total cost 1,084 (976–1,192) 1,687 (1,317–2,056)
 Variable cost 920 (855–986) 1,421 (1,203–1,640)
 Fixed cost 303 (234–372) 332 (82–582)
Fully adjusted, physician volume more than 50 cases
 Total cost 1,290 (1,170–1,409) 832 (393–1,270)
 Variable cost 892 (837–947) 311 (73–549)
 Fixed cost 334 (271–396) 585 (313–858)

Data are U.S. dollars (95% confidence interval).

Cost differential of robotically assisted compared with laparoscopic hysterectomy.

*

Fully adjusted model incorporates all clinical, demographic, physician, and hospital characteristics.

Provider area excluded from models because of absence of patients in one cell.

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