Table 1 Comparison of the means of acromion-to-greater tuberosity distance in neutral position and abduction of the arm and its ratio in various grades of shoulder impingement syndrome, observed by observer-1 and observer-2
From: Interobserver agreement on the sonographic severity grading of shoulder impingement syndrome
Severity grades | Observer 1 | Observer 2 | ||||
|---|---|---|---|---|---|---|
AGT D Nut | AGT D Abd | Ratio | AGT D Nut | AGT D Ab | Ratio | |
Grade 0 | ||||||
 N | 22 | 22 | 22 | 22 | 22 | 22 |
 Mean | 14.74 | 0.00 | 0.00 | 16.76 | 0.00 | 0.00 |
 Std. deviation | 1.00 | 0.00 | 0.00 | 1.12 | 0.00 | 0.00 |
 Minimum | 13.66 | 0.00 | 0.00 | 14.70 | 0.00 | 0.00 |
 Maximum | 17.60 | 0.00 | 0.00 | 19.60 | 0.00 | 0.00 |
Grade 1 | ||||||
 N | 20 | 20 | 20 | 20 | 20 | 20 |
 Mean | 17.25 | 5.71 | 0.33 | 17.27 | 5.75 | 0.33 |
 Std. deviation | 3.03 | 1.51 | 0.06 | 2.68 | 1.52 | 0.06 |
 Minimum | 13.46 | 3.90 | 0.19 | 14.00 | 3.67 | 0.20 |
 Maximum | 22.55 | 9.30 | 0.41 | 23.10 | 9.31 | 0.40 |
Grade 2 | ||||||
 N | 20 | 20 | 20 | 20 | 20 | 20 |
 Mean | 15.92 | 8.36 | 0.52 | 15.92 | 8.32 | 0.53 |
 Std. deviation | 1.96 | 1.41 | 0.09 | 2.02 | 1.45 | 0.09 |
 Minimum | 13.68 | 6.14 | 0.40 | 12.00 | 5.38 | 0.40 |
 Maximum | 22.20 | 11.39 | 0.71 | 21.25 | 10.85 | 0.70 |
Grade 3 | ||||||
 N | 16 | 16 | 16 | 16 | 16 | 16 |
 Mean | 14.81 | 12.17 | 0.82 | 15.90 | 12.81 | 0.81 |
 Std. deviation | 2.25 | 1.91 | 0.08 | 1.85 | 1.83 | 0.07 |
 Minimum | 13.33 | 10.08 | 0.72 | 12.40 | 9.50 | 0.71 |
 Maximum | 22.53 | 16.33 | 0.99 | 21.32 | 15.45 | 0.95 |
Total | ||||||
 N | 78 | 78 | 78 | 78 | 78 | 78 |
 Mean | 15.70 | 6.11 | 0.39 | 16.50 | 6.24 | 0.39 |
 Std. deviation | 2.35 | 4.63 | 0.30 | 2.03 | 4.80 | 0.30 |
 Minimum | 13.33 | 0.00 | 0.00 | 12.00 | 0.00 | 0.00 |
 Maximum | 22.55 | 16.33 | 0.99 | 23.10 | 15.45 | 0.95 |