Table 2.
Outcome data of a prospective study on laparoscopic ventral hernia repair with an iron oxide-loaded PVDF mesh to evaluate the mesh shrinkage between 1 and 13 months after implantation with MRI measurement
| Intra-class correlationa | ||||
|---|---|---|---|---|
| N | Width | Length | Surface area | |
| All MRI scans | 27 | 0.95 (0.92–0.98) | 0.96 (0.94–0.98) | 0.99 (0.99–1.00) |
| MRI at 1 month | 14 | 0.95 (0.89–0.98) | 0.99 (0.97–1.00) | 0.99 (0.99–1.00) |
| MRI at 13 months | 13 | 0.96 (0.91–0.99) | 0.94 (0.86–0.98) | 0.99 (0.99–1.00) |
| Change between measurements at implantation and MRI at 1 month (N = 14 patients) | |||||
|---|---|---|---|---|---|
| Implantation | MRI at 1 month | Difference | Significance | Change (%) | |
| Mean (SD) | Mean (SD) | Mean (SD) | P value | ||
| Width (cm) | 19.9 (1.9) | 19.1 (1.3) | − 0.7 (0.3) | 0.023 | − 3.6 |
| Length (cm) | 26.2 (2.6) | 24.3 (2.1) | − 1.9 (4.5) | 0.001 | − 7.2 |
| Change between MRI at 1 month and MRI at 13 months (N = 13 patients) | |||||
|---|---|---|---|---|---|
| MRI at 1 month | MRI at 13 months | Difference | Significance | Change (%) | |
| Mean (SD) | Mean (SD) | Mean (SD) | P value | ||
| Width (cm) | 19.1 (1.4) | 19.0 (1.3) | − 0.06 (0.59) | 0.740 | − 0.3 |
| Length (cm) | 24.4 (2.2) | 24.2 (2.0) | − 0.12 (0.74) | 0.565 | − 0.5 |
| Surface area (cm2) | 380 (44) | 376 (43) | − 4.0 (10.5) | 0.200 | − 1.0 |
N number of MRI scans available, MRI magnetic resonance imaging, Mean (SD) mean (standard deviation)
aIntra-class correlation = ICC (2,4) (95% CI)