Table 2 The means and standard deviations for CV measurements obtained using the SP-2000P and z-ring CS4, intra-observer repeatability, inter-observer reproducibility (z-ring CS4 only), and comparison between SP-2000P vs. z-ring CS4 (mean differences, limits of agreement, paired t -test, un-paired test, and p-values)
Analysis of CV values | Observer 1 | Observer 2 | |
|---|---|---|---|
SP-2000P | z-ring CS4 | z-ring CS4 | |
Mean ± SD* | 27.12 ± 2.51 | 27.10 ± 2.41 | 27.17 ± 2.25 |
Intra-observer repeatability (p-value) | 0.75 | 0.34 | 0.98 |
Mean difference ± SD* | Limits of agreement | p-value | |
Inter-observer reproducibility with z-ring CS4** | -0.20 ± 1.20 | +3.80, -4.20 | 0.30 |
Comparison between SP-2000P vs. z-ring CS4† | 0.20 ± 1.45 | +3.00, -2.70 | 0.79 |