Intraobserver and interobserver variations of categorical measures of dyspnoea in children
| Intraobserver variation | Interobserver variation | ||||
|---|---|---|---|---|---|
| 972 assessments | Pre valence (%) | Agreement (%) | κ* (95% CI) | Agreement (%) | κ† (95% CI) |
| Subcostal retractions | 68.0 | 84.6 | 0.65 (0.58 to 0.73) | 70.4 | 0.46 (0.44 to 0.49) |
| Prolonged expirium | 61.1 | 81.6 | 0.61 (0.47 to 0.75) | 61.6 | 0.12 (0.19 to 0.28) |
| Jugular retractions | 57.4 | 78.8 | 0.57 (0.48 to 0.66) | 65.1 | 0.29 (0.25 to 0.30) |
| Wheeze | 42.6 | 78.5 | 0.56 (0.48 to 0.64) | 68.0 | 0.36 (0.33 to 0.39) |
| Intercostal retractions | 42.0 | 76.2 | 0.49 (0.39 to 0.58) | 67.6 | 0.27 (0.24 to 0.30) |
| Nasal flaring | 22.8 | 88.6 | 0.63 (0.52 to 0.74) | 83.0 | 0.31 (0.26 to 0.37) |
| Supraclavicular retractions | 21.2 | 96.0 | 0.84 (0.75 to 0.93) | 79.3 | 0.37 (0.32 to 0.42) |
*Cohen's κ (Siegel and Castellan).18
†Multirater κ (light).19