Table IV.
Inter- and intraobserver agreement for ultrasound assessment of mean nodule diameter.
| Agreement | Site | Bland–Altman analysis | ICC | |
|---|---|---|---|---|
| Mean diff (*) | 95% B-A limits | (95% CI) | ||
| Interobserver | All | −1.3 | −6.7, 4.2 | 0.69 (0.53, 0.80) |
| Posterior | −1.7 | −7.4, 4.0 | 0.41 (0.12, 0.65) | |
| Bowel | −0.4 | −5.4, 4.6 | 0.88 (0.72, 0.95) | |
| Intraobserver A | All | 0.1 | −3.2, 3.5 | 0.91 (0.86, 0.94) |
| Posterior | 0.1 | −3.3, 3.4 | 0.86 (0.77, 0.92) | |
| Bowel | 0.5 | −2.8, 3.8 | 0.96 (0.90, 0.98) | |
| Intraobserver B | All | 0.0 | −2.7, 2.6 | 0.95 (0.93, 0.97) |
| Posterior | 0.3 | −1.8, 2.5 | 0.93 (0.88, 0.96) | |
| Bowel | −0.9 | −4.0, 2.2 | 0.93 (0.82, 0.97) | |
(*)Differences for interobserver variation calculated as Observer A − Observer B. Differences for intraobserver variation calculated as Measurement 1 – Measurement 2. N = 50 women.