Test-retest reliability measures for the Holden Communication Scale (HCS) (n=88)
| Scale | Baseline Test mean (SD) | 1 week Retest mean (SD) | Bias and 95% limits of agreement | p Value |
|---|---|---|---|---|
| Conversation | ||||
| 1. Response | 1.68 (1.37) | 1.65 (1.29) | 0.03 (−0.11; 0.17) | 0.63 |
| 2. Interest in past events | 2.18 (1.16) | 2.17 (1.17) | 0.01 (−0.07; 0.09) | 0.78 |
| 3. Pleasure | 1.42 (0.99) | 1.41 (0.94) | 0.01 (−0.13; 0.15) | 0.87 |
| 4. Humour | 1.86 (1.21) | 1.80 (1.19) | 0.07 (−0.06; 0.19) | 0.27 |
| Awareness and knowledge | ||||
| 5. Names | 2.20 (1.22) | 2.18 (1.17) | 0.02 (−0.08; 0.13) | 0.67 |
| 6. General orientation | 2.74 (1.28) | 2.78 (1.28) | 0.05 (−0.12; 0.03) | 0.25 |
| 7. General knowledge | 2.60 (1.05) | 2.59 (1.04) | 0.01 (−0.09; 0.12) | 0.83 |
| 8. Ability to join in games, etc | 2.10 (1.37) | 1.92 (1.24) | 0.18 (0.01; 0.35) | 0.04 |
| Communication | ||||
| 9. Speech | 1.50 (1.52) | 1.49 (1.53) | 0.01 (−0.09; 0.12) | 0.83 |
| 10. Attempts at communication | 1.27 (1.48) | 1.26 (1.44) | 0.01 (−0.08; 0.11) | 0.81 |
| 11. Interest and response to objects | 1.51 (1.32) | 1.47 (1.30) | 0.05 (−0.08; 0.17) | 0.47 |
| 12. Success in communication | 1.50 (1.46) | 1.44 (1.43) | 0.06 (−0.04; 0.15) | 0.23 |
| Total score | 22.6 (12.5) | 22.1 (12.1) | 0.38 (−0.42; 1.17) | 0.35 |