Table 5.
Inpatient episode of care length of stay (days) and public hospital activity-based funding costs expressed in constant dollars (reference case: 2016–2017 = 100) for patients who underwent primary laparoscopic adjustable gastric band (n = 89) and sleeve gastrectomy (n = 16) bariatric surgery in the Tasmanian public hospital system, and subgroup analyses
| Primary surgery (n = 105) | Episode of care for primary surgery (n) | LoS | LoS (sensitivity analyses) | Cost of episode of care | Cost of episode of care (sensitivity analysis) | Cost of episode of care per day |
|---|---|---|---|---|---|---|
| LAGB (n = 89) | ||||||
| Entire cohort | 89 |
(n = 89) 2.4 ± 3.6 |
(n = 83) 1.7 ± 0.9 |
(n = 89) 14,622 ± 9142 12,293 (10,198–15,452) 5343; 62,994 |
(n = 83)a 12,595 ± 4180 12,085 (9971–14,590) 5343; 23,838 |
(n = 89) 9050 ± 6332 7698 (5542–11,119) 1107; 52,748 |
| Subgroup analyses | ||||||
| Diabetes | 45 | 3.1 ± 4.8 |
(n = 40)b 1.8 ± 0.8 |
(n = 45) 16,502 ± 10,496 13,073 (10,787–18,757) 5682; 62,994 |
(n = 40) 13,488 ± 4605 12,657 (10,382–15,608) |
NA |
| ToS WR | p = 0.01* | p = 0.06 | p = 0.02* | p = 0.07 | ||
| No diabetes | 44 | 1.7 ± 1.3 |
(n = 43)c 1.6 ± 0.9 |
(n = 44) 12,699 ± 7129 11,223 (9889–13,021) 5343; 52,748 |
(n = 43) 11,763 ± 3599 11,119 (9887–12,875) 5343; 22,519 |
NA |
| BMI (high) ≥ 48.6 | 26 | 3.7 ± 6.1 | NA |
17,271 ± 14,083 12,782 (10,807–15,847) 5343; 62,994 |
NA | NA |
|
ToS WR BMI (low) < 48.6 |
26 |
p = 0.24 1.9 ± 1.3 |
NA |
p = 0.15 12,428 ± 6471 11,348 (9118–12,449) 5532; 38,896 |
NA | |
| SG (n = 16) | ||||||
| Entire cohort | 16 | 4.0 ± 1.1 | 3.8 ± 1.1 |
15,014 ± 5900d 13,290 (10,995–18,747) 6559; 26,158 p = 0.80 |
NA |
4030 ± 6364 3322 (3085–4583) 2186; 8040 |
| Diabetes | 11 | NA | 3.9 ± 1.3e |
15,899 ± 6491 14,559 (9092–21,480) 9024; 26,156 |
NA | NA |
Data are presented as mean ± standard deviation, median (interquartile range) or minimum; maximum unless otherwise indicated
BMI body mass index, LAGB laparoscopic adjustable gastric band, LoS length of stay, NA not applicable, SG sleeve gastrectomy, ToS WR test of significance Wilcoxon rank sum test
aReference case 2016–2017 = 100
bFive LoS outliers removed in diabetes subgroup (range 6–30 days)
cOne outlier removed in not diabetes subgroup 8 days
dCost data for primary SG available for 15 patients (also see Table 3). Cost outliers removed > $25,000
en = 10
*p < 0.05 level of significance