Table 2
Scatter plots and mean expected range of variability from each test-retest evaluation
| Test-retest | Mean* | Difference* | SD* | 95% CL*† | ±95% CL (%)† |
|---|---|---|---|---|---|
| *Values expressed in μm | |||||
| †95% confidence limits. | |||||
| Intraobserver analysis | |||||
| M1–M2 | 569.7 | 3.5 | 9.1 | 563.6–575.8 | 1.07 |
| M1–M3 | 570.1 | 2.6 | 11.2 | 564.3–575.9 | 1.02 |
| M2–M3 | 568.6 | 0.9 | 10.7 | 564.6–572.6 | 0.70 |
| E1–E2 | 569.7 | 1.5 | 7.4 | 566.0–573.3 | 0.64 |
| E1–E3 | 569.8 | 1.2 | 7.8 | 566.3–573.3 | 0.61 |
| E2–E3 | 569.1 | 0.2 | 8.0 | 566.5–571.5 | 0.44 |
| G1–G2 | 565.7 | 2.5 | 8.0 | 560.9–570.5 | 0.85 |
| G1–G3 | 565.5 | 2.9 | 10.8 | 559.6–571.5 | 1.05 |
| G2–G3 | 564.2 | 0.3 | 6.8 | 562.0–566.5 | 0.40 |
| Mean | 568.0 | 1.7 | 8.9 | 563.7–572.3 | 0.75 |
| Interobserver analysis | |||||
| M1–E1 | 570.9 | 1.0 | 11.0 | 566.8–575.1 | 0.72 |
| M1–G1 | 569.2 | 4.4 | 15.9 | 560.2–578.2 | 1.57 |
| E1–G1 | 568.7 | 3.4 | 11.2 | 562.1–575.3 | 1.16 |
| M2–E2 | 568.4 | 0.9 | 11.5 | 564.2–572.6 | 0.74 |
| M2–G2 | 566.2 | 3.5 | 10.7 | 559.6–572.7 | 1.15 |
| E2–G2 | 566.6 | 4.4 | 11.0 | 559.0–574.3 | 1.34 |
| M3–E3 | 569.0 | 0.3 | 12.8 | 565.0–572.9 | 0.69 |
| M3–G3 | 566.4 | 4.7 | 12.9 | 558.1–574.8 | 1.47 |
| E3–G3 | 566.6 | 5.0 | 9.0 | 559.0–574.2 | 1.34 |
| M1–E2 | 570.2 | 2.5 | 12.0 | 564.2–576.1 | 1.04 |
| M1–E3 | 570.3 | 2.2 | 11.7 | 564.7–575.9 | 0.98 |
| M1–G2 | 567.9 | 7.0 | 12.5 | 557.4–578.5 | 1.86 |
| M1–G3 | 567.8 | 7.3 | 12.5 | 556.9–578.6 | 1.92 |
| M2–E1 | 569.2 | 2.5 | 10.9 | 563.6–574.8 | 0.98 |
| M2–E3 | 568.5 | 1.2 | 11.1 | 564.1–572.9 | 0.77 |
| M2–G1 | 567.4 | 0.9 | 14.3 | 562.5–572.4 | 0.88 |
| M2–G3 | 566.0 | 3.8 | 11.4 | 558.9–573.1 | 1.25 |
| M3–E1 | 569.6 | 1.6 | 13.8 | 564.1–575.1 | 0.97 |
| M3–E2 | 568.8 | 0.1 | 13.5 | 564.9–572.7 | 0.69 |
| M3–G1 | 567.9 | 1.8 | 17.0 | 561.3–574.5 | 1.17 |
| M3–G2 | 566.6 | 4.3 | 13.1 | 558.5–574.7 | 1.43 |
| E1–G2 | 567.4 | 6.0 | 9.6 | 558.7–576.1 | 1.54 |
| E1–G3 | 567.2 | 6.3 | 9.5 | 558.2–576.3 | 1.59 |
| E2–G1 | 567.9 | 1.9 | 12.5 | 562.5–573.4 | 0.96 |
| E2–G3 | 566.5 | 4.8 | 10.8 | 558.6–574.3 | 1.39 |
| E3–G1 | 568.1 | 2.1 | 12.8 | 562.3–573.8 | 1.02 |
| E3–G2 | 566.8 | 4.7 | 10.0 | 559.2–574.3 | 1.33 |
| Mean | 568.0 | 3.3 | 12.0 | 561.3–574.7 | 1.18 |
