Dependent variable | Comparison group | Compared with | Mean difference (unit-μm) | Std. error | p value |
---|---|---|---|---|---|
Baseline Ra | Group 1 | Group 2 | − 0.09 | 0.11 | 0.857 |
Group 3 | 0.04 | 0.11 | 0.983 | ||
Group 4 | 0.02 | 0.11 | 0.997 | ||
Group 2 | Group 3 | 0.13 | 0.11 | 0.654 | |
Group 4 | 0.11 | 0.11 | 0.756 | ||
Group 3 | Group 4 | − 0.02 | 0.11 | 0.998 | |
Post polishing Ra | Group 1 | Group 2 | 0.19 | 0.16 | 0.627 |
Group 3 | 1.37* | 0.16 | < 0.001 | ||
Group 4 | − 1.25* | 0.16 | < 0.001 | ||
Group 2 | Group 3 | 1.17* | 0.16 | < 0.001 | |
Group 4 | − 1.45* | 0.16 | < 0.001 | ||
Group 3 | Group 4 | − 2.63* | 0.16 | < 0.001 | |
Difference Ra | Group 1 | Group 2 | 0.28 | 0.18 | 0.417 |
Group 3 | 1.33* | 0.18 | < 0.001 | ||
Group 4 | − 1.28* | 0.18 | < 0.001 | ||
Group 2 | Group 3 | 1.04* | 0.18 | < 0.001 | |
Group 4 | − 1.56* | 0.18 | < 0.001 | ||
Group 3 | Group 4 | − 2.61* | 0.18 | < 0.001 |