Table 4.
Sensitivity, Specificity, and Positive and Negative Predictive Values in Identifying Type 1 ROP
| Alarm Status | % (95% CI) | ||||
|---|---|---|---|---|---|
| Alarm | No Alarm | Total | Sensitivity | Specificity | |
| ROP categories, No. (%) of infants | |||||
| Type 1 ROP | 144 | 2 | 146 | 98.6 (96.7-100.5) | . . . |
| Non-type 1 ROP | 957 | 603 | 1560 | . . . | 38.7 (36.2-41.1) |
| Total | 1101 | 605 | 1706 | ||
| Predictive value, % (No./total No.) | |||||
| PPV | 13.1 (144/1101) | . . . | . . . | . . . | . . . |
| NPV | . . . | 99.7 (603/605) | . . . | . . . | . . . |
Abbreviations: ellipses, not applicable; NPV, negative predictive value; PPV, positive predictive value; ROP, retinopathy of prematurity.