Table 4.
Specificity During Pretest, % (SE) | Specificity During Posttest, % (SE) | |||||
---|---|---|---|---|---|---|
Diagnosis | Intervention Group | Control Group | P Value* | Intervention Group | Control Group | P Value* |
Stage | ||||||
1 or worse | 79 (6) | 76 (6) | 0.71 | 94 (2) | 67 (7) | <0.01 |
2 or worse | 83 (4) | 83 (8) | 0.98 | 95 (1) | 87 (4) | 0.09 |
3 or worse | 89 (3) | 90 (3) | 0.84 | 96 (1) | 90 (3) | 0.08 |
Zone | ||||||
Zone II or I | –† | –† | –† | –† | ||
Zone I | 86 (3) | 86 (3) | 0.86 | 89 (3) | 85 (3) | 0.30 |
Plus | ||||||
Pre-plus or worse | 87 (4) | 86 (5) | 0.92 | 96 (1) | 87 (4) | 0.05 |
Plus | 90 (2) | 88 (3) | 0.58 | 92 (2) | 88 (2) | 0.21 |
Category | ||||||
Mild or worse | 81 (5) | 79 (5) | 0.75 | 94 (2) | 79 (5) | 0.01 |
Type 2 or worse | 88 (3) | 85 (3) | 0.39 | 92 (1) | 84 (4) | 0.04 |
Requiring treatment | 85 (3) | 80 (3) | 0.20 | 89 (2) | 79 (3) | <0.01 |
Presence of AP-ROP | 82 (5) | 76 (6) | 0.47 | 94 (2) | 78 (5) | <0.01 |
Presence of ROP | 79 (6) | 76 (6) | 0.71 | 94 (1) | 67 (7) | <0.01 |
AP-ROP = aggressive posterior retinopathy of prematurity; ROP = retinopathy of prematurity; SE = standard error.
P value using paired t test. Boldface indicates statistical significance of P < 0.05.
Specificity is undefined as all eyes contained disease in zone I and/or zone II.