Table S8. Comparative costs in 2015 U.S. Dollars of lobectomy by open and robotic-assisted approaches during index hospitalization and perioperative 30-day period for all hospitals and hospitals with >25 annual OL or RL cases.
| Variables | OL, mean [SD] | RL, mean [SD] | OL, median [Q1–Q3] | RL, median [Q1–Q3] | P valuea |
|---|---|---|---|---|---|
| All hospitals | |||||
| 2008–2012 | |||||
| Cost during hospitalization (2015 USD) | |||||
| Total cost | 26,183 [16,479] | 30,549 [19,486] | 22,162 [16,548–29,843] | 26,015 [20,291–34,207] | <0.0001* |
| Overhead cost | 12,663 [9,943] | 15,103 [11,785] | 10,873 [7,330–14,885] | 13,008 [8,547–18,037] | <0.0001* |
| Direct cost | 13,520 [9,837] | 15,446 [10,001] | 11,119 [8,001–15,648] | 12,949 [9,595–17,802] | <0.0001* |
| Cost perioperative 30 days (2015 USD) | |||||
| Total cost | 27,636 [18,248] | 32,622 [22,929] | 22,921 [17,035–32,483] | 27,274 [20,787–35,554] | <0.0001* |
| Overhead cost | 13,401 [10,895] | 16,080 [13,238] | 11,225 [7,667–15,717] | 13,540 [8,927–19,204] | <0.0001* |
| Direct cost | 14,235 [10,584] | 16,543 [12,067] | 11,604 [8,178–16,619] | 13,375 [9,910–18,716] | <0.0001* |
| 2013–2015 September | |||||
| Cost during hospitalization (2015 USD) | |||||
| Total cost | 26,797 [23,940] | 29,111 [22,768] | 21,277 [16,343–29,387] | 24,150 [18,285–32,453] | <0.0001* |
| Overhead cost | 12,636 [16,465] | 14,247 [12,221] | 9,904 [7,243–14,491] | 11,812 [7,780–16,647] | <0.0001* |
| Direct cost | 14,161 [15,159] | 14,865 [11,769] | 11,014 [8,067–14,868] | 12,069 [9,548–16,899] | <0.0001* |
| Cost perioperative 30 days (2015 USD) | |||||
| Total cost | 28,494 [25,479] | 30,525 [23,587] | 22,145 [16,852–30,951] | 25,312 [18,868–34,099] | <0.0001* |
| Overhead cost | 13,483 [17,202] | 14,997 [12,716] | 10,238 [7,445–15,455] | 12,432 [8,162–17,507] | <0.0001* |
| Direct cost | 15,011 [15,842] | 15,528 [12,139] | 11,385 [8,261–16,056] | 12,602 [9,782–17,623] | <0.0001* |
| Hospitals with >25 annual OL or RL cases | |||||
| 2008–2012 | |||||
| Cost during hospitalization (2015 USD) | |||||
| Total cost | 25,954 [19,626] | 28,721 [22,399] | 20,700 [15,896–27,676] | 24,030 [18,695–31,376] | 0.001* |
| Overhead cost | 12,827 [11,040] | 14,481 [15,185] | 10,947 [6,868–14,905] | 12,860 [6,844–17,536] | 0.10 |
| Direct cost | 13,126 [12,179] | 14,240 [9,438] | 10,084 [7,424–13,588] | 11,849 [9,253–15,643] | <0.0001* |
| Cost perioperative 30 days (2015 USD) | |||||
| Total cost | 27,722 [24,653] | 30,654 [25,480] | 21,798 [16,189–28,943] | 24,583 [19,771–32,238] | 0.001* |
| Overhead cost | 13,857 [14,946] | 15,357 [16,384] | 11,601 [7,143–15,331] | 13,143 [7,122–18,503] | 0.08 |
| Direct cost | 13,866 [13,170] | 15,298 [11,667] | 10,285 [7,552–14,199] | 12,375 [9,467–15,872] | <0.0001* |
| 2013–2015 September | |||||
| Cost during hospitalization (2015 USD) | |||||
| Total cost | 32,211 [32,457] | 28,516 [26,876] | 24,469 [18,822–34,345] | 23,220 [18,229–30,987] | 0.12 |
| Overhead cost | 17,334 [17,717] | 13,930 [13,404] | 12,008 [8,602–20,348] | 11,668 [8,602–20,348] | 0.02* |
| Direct cost | 14,877 [16,402] | 14,586 [13,915] | 11,144 [8,509–14,721] | 11,546 [9,109–15,957] | 0.14 |
| Cost perioperative 30 days (2015 USD) | |||||
| Total cost | 34,206 [34,227] | 29,925 [27,398] | 25,039 [19,398–37,291] | 23,886 [18,506–32,787] | 0.11 |
| Overhead cost | 18,304 [18,342] | 14,754 [13,787] | 12,682 [9,024–21,420] | 12,182 [8,564–16,698] | 0.02* |
| Direct cost | 15,901 [17,884] | 15,170 [14,096] | 11,770 [8,748–15,421] | 11,877 [9,426–16,605] | 0.23 |
*, P<0.05 indicates statistical significance. a, Wilcoxon rank-sum test was used to test for significance. OL, open lobectomy; Q1, first quarter; Q3, third quarter; RL, robotic-assisted lobectomy; SD, standard deviation; USD, US dollars.