Table 5 Agreement within 50 people on the four photographs representing acceptability \(\Delta {\text{E}}\) value
From: Perceptual and quantitative analysis of discoloration of orthodontic elastomeric chains by food
Variables | Kappa | Agreement (%) | P-value |
|---|---|---|---|
Curry | 0.540 | 82.0 | P < 0.001 |
Coffee | 0.499 | 94.0 | P < 0.001 |
Wine | 0.634 | 94.0 | P < 0.001 |