Table 3.
Scan times for both groups with simple statistics (mean, median, minimum and maximum) plus absolute and percentage differences between the groups.
| Scanning times (min) | |||
|---|---|---|---|
| rTVUS | eTVUS | Difference (%) | |
| All sonographers | |||
| n | 105 | 199 | – |
| Mean (±SD) | 8.4 (±3.2) | 13.8 (±5.2) | 5.4 (64%) |
| Median | 7 | 12 | 5.0 (71%) |
| Minimum | 4 | 7 | 3.0 (75%) |
| Maximum | 19 | 42 | 23.0 (121%) |
| IQR (25%, 75%) | 6.0–10.0 | 10.0–16.0 | – |
| Sonographer A | |||
| n | 50 | 36 | – |
| Mean (±SD) | 8.9 (±3.5) | 16.4 (±6.4) | 7.5 (84%) |
| Median | 8 | 16 | 8.0 (100%) |
| Minimum | 4 | 7 | 3.0 (75%) |
| Maximum | 19 | 32 | 13.0 (68%) |
| IQR (25%, 75%) | 6.0–11.3 | 11.3–20.8 | – |
| Sonographer B | |||
| n | 29 | 122 | – |
| Mean (±SD) | 6.9 (±2.4) | 13.6(±5.2) | 6.7 (97%) |
| Median | 6 | 12 | 6.0 (100%) |
| Minimum | 4 | 8 | 4.0 (100%) |
| Maximum | 15 | 42 | 27.0 (180%) |
| IQR (25%, 75%) | 5.0–7.5 | 10.0–16.0 | – |
| Sonographer C | |||
| n | 26 | 41 | – |
| Mean (±SD) | 8.6 (±2.9) | 12.3 (±3.5) | 3.7 (43%) |
| Median | 8.5 | 12 | 3.5 (41%) |
| Minimum | 4 | 7 | 3.0 (75%) |
| Maximum | 15 | 21 | 6.0 (40%) |
| IQR (25%, 75%) | 6.0–10.3 | 10.0–14.3 | – |