Clinical outcomes
| LAMS (n = 31) | Plastic (n = 29) | P values | |
| Resolution of SIRS at 24 hours post-treatment: n (%) | 4 (44.4) | 9 (69.2) | 0.384 |
| Resolution of organ failure at 24 hours post-treatment: n (%) | 1 (50.0) | 1 (25.0) | 0.999 |
| Treatment success: n (%) | 29 (93.5) | 28 (96.6) | 0.999 |
| Length of hospital stay (days): | |||
| Mean (SD) | 6.2 (9.0) | 12.2 (21.1) | 0.129 |
| Median | 3 | 4 | |
| IQR | 6 | 13 | |
| Range | 0–38 | 0–103 | |
| Adverse events: n (%) | |||
| Overall | 13 (41.9) | 6 (20.7) | 0.077 |
| Stent-related | 10 (32.3) | 2 (6.9) | 0.014 |
| Prior protocol change | 8 (25.8) | 0 | 0.005 |
| After protocol change | 2 (6.5) | 2 (6.9) | 0.999 |
| Clinical | 3 (9.7) | 4 (13.8) | 0.702 |
| Total no. of procedures for treatment success: n (%) | |||
| Mean (SD) | 2.8 (1.2) | 3.2 (1.5) | 0.192 |
| Median | 2 | 3 | |
| IQR | 1 | 2 | |
| Range | 2–7 | 2–7 | |
| Total no. of readmissions: n (%) * | |||
| 0 | 21 (67.7) | 18 (62.1) | 0.645 |
| 1 | 8 (25.8) | 9 (31.0) | |
| 2 | 0 | 2 (6.9) | |
| 3 | 2 (6.5) | 0 | |
| WON recurrence: n (%) | 1 (3.2) | 0 | 0.999 |
| Mean costs, 2017 US$: | |||
| Total cost† | 53 117 | 50 132 | 0.775 |
| Procedure cost | 12 155 | 6609 | <0.001 |
*From index procedure to last date of follow-up. The p value infers to readmission vs no readmission.
↵†Total costs encompass costs for hospital stay, procedure, pharmacy, radiology, anaesthesia, laboratory and other support services.
LAMS, lumen-apposing metal stent; SIRS, systemic inflammatory response syndrome; WON, walled-off necrosis.