Agreement between the two observers on classification of crackles
| Kappa | 95% CI | |
| Among all participants in the second round of classification (n=588) | ||
| Basal inspiratory crackles either lung | 0.65 | 0.59 to 70.9 |
| Among 263 participants classified by both observers to have unilateral/bilateral basal inspiratory crackles | ||
| Fine or coarse crackles either lung | 0.24 | 0.13 to 0.36 |
| Early* or late crackles either lung | 0.40 | 0.30 to 0.51 |
*'Early crackles’ and ‘both early and late crackles’ are included in the category ‘early’.