Table 4.
Discriminant construct validity: CPQ overall and domain scores by the RDC/TMD diagnosis and "supercontrol" groups
| RDC/TMD Diagnosis Group (n = 32) | Supercontrol Group (n = 28) | ||||
|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | P* | ES† | ||
| CPQ8-10 | Overall scale [0-100] | 25.6 (22.3) | 7.5 (7.8) | < 0.0001 | 0.61 |
| Subscales | |||||
| Oral symptoms [0-20] | 8.7 (4.6) | 3.5 (3.4) | < 0.0001 | 0.87 | |
| Functional limitations [0-20] | 4.8 (4.7) | 1.3 (1.9) | < 0.0001 | 0.58 | |
| Emotional well-being [0-20] | 4.7 (5.2) | 1.1 (1.7) | 0.000 | 0.50 | |
| Social well-being [0-40] | 7.4 (9.6) | 1.7 (3.1) | 0.006 | 0.54 | |
| RDC/TMD Diagnosis Group (n = 69) | Supercontrol Group (n = 29) | ||||
| Mean (SD) | Mean (SD) | P* | ES† | ||
| CPQ11-14 | Overall scale [0-148] | 35.0 (24.1) | 11.7 (9.6) | < 0.0001 | 0.88 |
| Subscales | |||||
| Oral symptoms [0-24] | 8.7 (5.8) | 4.2 (2.1) | < 0.0001 | 0.74 | |
| Functional limitations [0-26] | 8.8 (7.0) | 2.2 (2.9) | < 0.0001 | 0.89 | |
| Emotional well-being [0-36] | 10.0 (8.9) | 3.1 (4.1) | < 0.0001 | 0.73 | |
| Social well-being [0-52] | 7.5 (6.8) | 2.1 (3.4) | < 0.0001 | 0.82 | |
TMD, temporomandibular disorder; CPQ, child perceptions questionnaire
Values in square brackets indicate range of possible scores
* P-values obtained from Mann-Whitney test
† ES = Effect sizes, difference in group means/pooled SD