Table.
abstract 76. Performance of standard minimally invasive surgery tools and the tactile sensing system in a test model to locating occult tumours during video-assisted thoracoscopic surgery
| Tools | Measure; mean (SD) | Measure; % | Positive likelihood ratio | p value* | |||
|---|---|---|---|---|---|---|---|
| Maximum pressure, N/cm2 | Average distance, cm | Acc. | Sens. | Spec. | |||
| MIS | |||||||
| Manual | N/A | 0.33 (0.2) | 88 | 88 | 89 | 7.88 | < 0.01 |
| Grasper | 7.2 (2.8) | 0.47 (0.3) | 51 | 67 | 29 | 0.94 | 0.79 |
| Ultrasound | 1.6 (0.8) | 0.68 (0.4) | 58 | 67 | 42 | 1.14 | 0.62 |
| TSS | |||||||
| Liver | 2.1 (0.8)† | 0.46 (0.2) | 61 | 81 | 29 | 1.14 | 0.29 |
| Lung | 2.5 (1.0)‡ | 0.64 (0.4)§ | 57 | 66 | 33 | 0.98 | 0.95 |
Acc. = accuracy; MIS = minimally invasive surgery; Sens. = sensitivity; Spec. = specificity; TSS = tactile sensing system.
*
Pearson χ2 (2-sided).
†
p < 0.01 determined by one-way analysis of variance.
‡
p = 0.13 determined by an independent samples t test (unequal variances) when compared with TSS using liver.
§
p = 0.06 determined as above.