Table 2 Cross-tabulation to find the agreement of observer-1 and observer-2 in the shoulder impingement severity grading
From: Interobserver agreement on the sonographic severity grading of shoulder impingement syndrome
Observer 1 | Observer 2 | Total | |||
|---|---|---|---|---|---|
Grade 0 | Grade 1 | Grade 2 | Grade 3 | ||
Grade 0 | |||||
 Count | 22 | 0 | 0 | 0 | 22 |
 Expected count | 6.2 | 5.6 | 5.6 | 4.5 | 22 |
Grade 1 | |||||
 Count | 0 | 19 | 1 | 0 | 20 |
 Expected count | 5.6 | 5.1 | 5.1 | 4.1 | 20 |
Grade 2 | |||||
 Count | 0 | 1 | 18 | 0 | 19 |
 Expected count | 5.4 | 4.9 | 4.9 | 3.9 | 19 |
Grade 3 | |||||
 Count | 0 | 0 | 1 | 16 | 17 |
 Expected count | 4.8 | 4.4 | 4.4 | 3.5 | 17 |
Total | |||||
 Count | 22 | 20 | 20 | 16 | 78 |
 Expected count | 22 | 20 | 20 | 16 | 78 |