Table 4. Binary categorical agreement analysis of low bubble grades (0–2) and high bubble grades (3–4); Cohen’s Kappa 0.31 (SE: 0.064) .
Highest grades O’Dive | Highest grades 2D cardiac imaging | Total | |
Low | High | ||
Low | 58 | 54 | 112 |
High | 3 | 37 | 40 |
Total | 61 | 91 | 152 |