Open Access
Table 4
Other NAVI and VRAS ergonomic factors.
| NAVI | VRAS | Effect size | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Characteristics | Mean ± SD | Range | Median | IQR | Mean ± SD | Range | Median | IQR | p-value | MD | 95% CI |
| Power tool holding (min) | 7.66 ± 1.90 | 5.43–11.07 | 6.97 | 6.29–9.13 | 2.69 ± 0.68 | 1.67–3.57 | 2.67 | 2.28–3.23 | <.001 | 4.96 | 3.6 to 6.3 |
| Retractor holding (min) | 13.03 ± 5.06 | 7.40–23.75 | 11.38 | 9.73–15.93 | 7.80 ± 1.19 | 5.28–9.48 | 7.72 | 7.37–8.30 | 0.01 | 5.23 | 1.6 to 8.9 |
| Leg holding (min) | 4.70 ± 1.48 | 3.12–7.45 | 4.68 | 3.31–5.45 | 3.35 ± 0.80 | 2.25–4.25 | 3.53 | 2.60–4.03 | 0.02 | 1.35 | 0.3 to 2.5 |
| Trays | |||||||||||
| Number of trays | 4 | 5 | / | ||||||||
| Tray weight (kg) | 21.5 | 20.9 | / | ||||||||
| Recuts* | |||||||||||
| Tibial or femoral | 2 (20%) | 2 (20%) | n.s. | ||||||||
*Categorical value based on Fisher’s exact test.
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