Table 1.
Descriptive Statistics of Annotated Features by Grader
| Intergrader | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Grader 1 | Grader 2 | |||||||||
| N | Mean (SD) | Range | N | Mean (SD) | Range | N Annotated by Both Graders | Absolute Difference in Area Mean (SD) | Range | ||
| Limbus | 75 | 94.0 (10.3) | 60.5 – 107.5 | 75 | 95.8 (11.3) | 61.6 – 108.6 | 75 | 2.9 (2.1) | 0.2 – 8.8 | |
| Pupil | 60 | 9.5 (8.9) | 0.9 – 40.9 | 55 | 7.9 (8.5) | 0.2 – 39.0 | 52 | 2.3 (4.3) | 0.0 – 25.2 | |
| Epithelial Defect | 74* | 12.8 (13.6) | 0.3 – 73.7 | 74 | 12.7 (13.4) | 0.4 – 74.8 | 74 | 0.7 (1.2) | 0.0 – 8.5 | |
| Stromal Infiltrate | 75 | 9.9 (9.2) | 0.2 – 45.3 | 75 | 12.8 (12.9) | 0.7 – 70.1 | 75 | 4.1 (9.9) | 0.0 – 66.7 | |
| Stromal Infiltrate (in Sample with White Blood Cell Presence Agreement) | 40 | 9.27 (8.49) | 0.5 – 40.2 | 40 | 10.5 (8.7) | 0.7 – 38.9 | 40 | 2.1 (2.9) | 0.0 – 13.2 | |
| Stromal Infiltrate and White Blood Cells | 75 | 15.7 (13.6) | 0.7 – 64.2 | 75 | 20.2 (14.7) | 0.6 – 76.9 | 75 | 6.4 (9.5) | 0.1 – 73.5 | |
| Hypopyon | 29 | 8.6 (8.2) | 0.7 – 42.5 | 31 | 8.9 (7.6) | 0.9 – 39.7 | 28 | 1.7 (1.3) | 0.3 – 5.0 | |
| White Blood Cells | 45 | 19.0 (14.4) | 1.1 – 64.2 | 62 | 20.5 (14.2) | 1.6 – 76.8 | 36 | 4.7 (5.0) | 0.2 – 18.9 | |
| Intragrader | ||||||||||
| First Reading | Second Reading | |||||||||
| N | Mean (SD) | Range | N | Mean (SD) | Range | N Annotated Each Reading | Absolute Difference in Area Mean (SD) | Range | ||
| Limbus | 75 | 95.8 (11.3) | 61.6 – 108.6 | 75 | 92.4 (10.1) | 62.4 – 115.1 | 75 | 5.4 (3.5) | 0.2 – 15.7 | |
| Pupil | 55 | 7.9 (8.5) | 0.2 – 39.0 | 59 | 9.4 (9.4) | 0.6 – 43.1 | 55 | 2.2 (3.4) | 0.1 – 20.0 | |
| Epithelial Defect | 74 | 12.7 (13.4) | 0.4 – 74.8 | 74 | 12.6 (13.0) | 0.3 – 71.0 | 74 | 0.8 (1.3) | 0.0 – 8.4 | |
| Stromal Infiltrate | 75 | 12.8 (12.9) | 0.7 – 70.1 | 75 | 11.6 (12.5) | 0.6 – 73.0 | 75 | 2.7 (3.6) | 0.0 – 14.9 | |
| Stromal Infiltrate (in Sample with White Blood Cell Presence Agreement) | 60 | 10.8 (9.3) | 0.8 – 38.9 | 60 | 10.4 (9.49) | 0.7 – 38.2 | 60 | 2.1 (2.7) | 0.0 – 14.2 | |
| Stromal Infiltrate and White Blood Cells | 75 | 20.2 (14.7) | 0.6 – 76.9 | 75 | 16.8 (14.5) | 0.8 – 73.0 | 75 | 4.2 (4.3) | 0.2 – 20.9 | |
| Hypopyon | 31 | 8.9 (7.6) | 0.9 – 39.7 | 34 | 7.4 (7.3) | 0.6 – 38.0 | 31 | 1.4 (0.9) | 0.0 – 3.7 | |
| White Blood Cells | 62 | 20.5 (14.2) | 1.6 – 76.8 | 71 | 15.82 (13.1) | 0.8 – 63.5 | 59 | 4.6 (4.6) | 0.2 – 20.9 | |
Area was calculated by converting pixels to mm2
SD: Standard Deviation
*
One image was unable to be converted from pixels to mm2