Table 2. Performance measures of significant variables in the derivation cohort.
| Observations | Sensitivity (CI) | Specificity (CI) | Positive Predictive Value (CI) | Negative Predictive Value (CI) | Likelihood Ratio | Odd’s Ratio | Fisher's exact test |
|---|---|---|---|---|---|---|---|
| Edema | 89.23% (79.40% to 94.68%) |
61.90% (46.81% to 75.00%) |
78.38% (67.73% to 86.23%) |
78.79% (62.25% to 89.32%) |
2.34 | 13.46 (4.827 to 32.91) |
<0.0001 |
| Age >26 years old | 89.23% (79.40% to 94.68%) |
50.00% (33.36% to 62.28%) |
73.42% (62.76% to 81.91%) |
75.00% (56.64% to 87.32%) |
1.79 | 8.286 (2.990 to 20.44) |
<0.0001 |
| ROP | 73.85% (62.05% to 82.98%) |
54.76% (39.95% to 68.78%) |
71.64% (59.91% to 81.03%) |
57.50% (42.40% to 71.49%) |
1.63 | 3.418 (1.461 to 7.844) |
0.0041 |
| Sex (Female) | 72.31% (60.42% to 81.71%) |
52.38% (37.72% to 66.64%) | 70.15% (58.34% to 79.77%) |
55.00% (39.83% to 69.29%) |
1.54 | 2.872 (1.239 to 6.427) |
0.0139 |
| Hypertension | 29.23% (19.58% to 41.20%) |
92.86% (80.99% to 97.54%) |
86.36% (66.67% to 95.25%) |
45.88% (35.70% to 56.42%) |
4.09 | 5.370 (1.510 to 17.97) |
0.0065 |
| Pruritus | 60.00% (47.86% to 71.03%) | 64.29% (49.17% to 77.01%) | 72.22% (59.11% to 82.38%) | 50.94% (37.88% to 63.88%) | 1.68 | 2.700 (1.205 to 6.001) | 0.0178 |
ROP = Retro-Orbital Pain