Table 1 Intra-rater agreement of repeated VAS ratings tested through the intraclass correlation coefficient (ICC, two-way random model, absolute agreement, results regarding average measures)
Intra-rater agreement | Orthodontists | Patients | Parents | Laypersons | All |
|---|---|---|---|---|---|
Face | 0.61 (CI 0.25, 0.80) | 0.74 (CI 0.49, 0.87) | 0.78 (CI 0.57, 0.89) | 0.40 (CI − 0.18, 0.69) | 0.68 (CI 0.56, 0.77) |
Lower face | 0.45 (CI − 0.08, 0.72) | 0.60 (CI 0.21, 0.80) | 0.70 (CI 0.41, 0.85) | 0.48 (CI − 0.02, 0.73) | 0.61 (CI 0.46, 0.72) |
Upper lip | 0.37 (CI − 0.25, 0.68) | 0.80 (CI 0.60, 0.90) | 0.69 (CI 0.39, 0.84) | 0.55 (CI 0.12, 0.77) | 0.68 (CI 0.56, 0.77) |
Lower lip | 0.58 (CI 0.18, 0.78) | 0.23 (CI − 0.51, 0.61) | 0.59 (CI 0.19, 0.79) | 0.50 (CI 0.05, 0.74) | 0.43 (CI 0.21, 0.59) |
Chin | 0.50 (CI 0.00, 0.74) | 0.59 (CI 0.20, 0.79) | 0.80 (CI 0.62, 0.90) | 0.53 (CI 0.09, 0.76) | 0.64 (CI 0.50, 0.74) |